get rid of deprecated server and client interface
diff --git a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
index 8c64f4f..22bd27e 100644
--- a/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/MetricsGrpc.cs
@@ -72,53 +72,6 @@
       get { return global::Grpc.Testing.MetricsReflection.Descriptor.Services[0]; }
     }
 
-    /// <summary>Client for MetricsService</summary>
-    [System.Obsolete("Client side interfaced will be removed in the next release. Use client class directly.")]
-    public interface IMetricsServiceClient
-    {
-      /// <summary>
-      ///  Returns the values of all the gauges that are currently being maintained by
-      ///  the service
-      /// </summary>
-      AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Returns the values of all the gauges that are currently being maintained by
-      ///  the service
-      /// </summary>
-      AsyncServerStreamingCall<global::Grpc.Testing.GaugeResponse> GetAllGauges(global::Grpc.Testing.EmptyMessage request, CallOptions options);
-      /// <summary>
-      ///  Returns the value of one gauge
-      /// </summary>
-      global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Returns the value of one gauge
-      /// </summary>
-      global::Grpc.Testing.GaugeResponse GetGauge(global::Grpc.Testing.GaugeRequest request, CallOptions options);
-      /// <summary>
-      ///  Returns the value of one gauge
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Returns the value of one gauge
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.GaugeResponse> GetGaugeAsync(global::Grpc.Testing.GaugeRequest request, CallOptions options);
-    }
-
-    /// <summary>Interface of server-side implementations of MetricsService</summary>
-    [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
-    public interface IMetricsService
-    {
-      /// <summary>
-      ///  Returns the values of all the gauges that are currently being maintained by
-      ///  the service
-      /// </summary>
-      global::System.Threading.Tasks.Task GetAllGauges(global::Grpc.Testing.EmptyMessage request, IServerStreamWriter<global::Grpc.Testing.GaugeResponse> responseStream, ServerCallContext context);
-      /// <summary>
-      ///  Returns the value of one gauge
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.GaugeResponse> GetGauge(global::Grpc.Testing.GaugeRequest request, ServerCallContext context);
-    }
-
     /// <summary>Base class for server-side implementations of MetricsService</summary>
     public abstract class MetricsServiceBase
     {
@@ -142,9 +95,7 @@
     }
 
     /// <summary>Client for MetricsService</summary>
-    #pragma warning disable 0618
-    public class MetricsServiceClient : ClientBase<MetricsServiceClient>, IMetricsServiceClient
-    #pragma warning restore 0618
+    public class MetricsServiceClient : ClientBase<MetricsServiceClient>
     {
       public MetricsServiceClient(Channel channel) : base(channel)
       {
@@ -218,19 +169,7 @@
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
-    public static ServerServiceDefinition BindService(IMetricsService serviceImpl)
-    #pragma warning restore 0618
-    {
-      return ServerServiceDefinition.CreateBuilder()
-          .AddMethod(__Method_GetAllGauges, serviceImpl.GetAllGauges)
-          .AddMethod(__Method_GetGauge, serviceImpl.GetGauge).Build();
-    }
-
-    /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
     public static ServerServiceDefinition BindService(MetricsServiceBase serviceImpl)
-    #pragma warning restore 0618
     {
       return ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_GetAllGauges, serviceImpl.GetAllGauges)
diff --git a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
index 171945e..9c99296 100644
--- a/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/ServicesGrpc.cs
@@ -67,58 +67,6 @@
       get { return global::Grpc.Testing.ServicesReflection.Descriptor.Services[0]; }
     }
 
-    /// <summary>Client for BenchmarkService</summary>
-    [System.Obsolete("Client side interfaced will be removed in the next release. Use client class directly.")]
-    public interface IBenchmarkServiceClient
-    {
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options);
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options);
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.SimpleRequest, global::Grpc.Testing.SimpleResponse> StreamingCall(CallOptions options);
-    }
-
-    /// <summary>Interface of server-side implementations of BenchmarkService</summary>
-    [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
-    public interface IBenchmarkService
-    {
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context);
-      /// <summary>
-      ///  One request followed by one response.
-      ///  The server returns the client payload as-is.
-      /// </summary>
-      global::System.Threading.Tasks.Task StreamingCall(IAsyncStreamReader<global::Grpc.Testing.SimpleRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.SimpleResponse> responseStream, ServerCallContext context);
-    }
-
     /// <summary>Base class for server-side implementations of BenchmarkService</summary>
     public abstract class BenchmarkServiceBase
     {
@@ -143,9 +91,7 @@
     }
 
     /// <summary>Client for BenchmarkService</summary>
-    #pragma warning disable 0618
-    public class BenchmarkServiceClient : ClientBase<BenchmarkServiceClient>, IBenchmarkServiceClient
-    #pragma warning restore 0618
+    public class BenchmarkServiceClient : ClientBase<BenchmarkServiceClient>
     {
       public BenchmarkServiceClient(Channel channel) : base(channel)
       {
@@ -223,19 +169,7 @@
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
-    public static ServerServiceDefinition BindService(IBenchmarkService serviceImpl)
-    #pragma warning restore 0618
-    {
-      return ServerServiceDefinition.CreateBuilder()
-          .AddMethod(__Method_UnaryCall, serviceImpl.UnaryCall)
-          .AddMethod(__Method_StreamingCall, serviceImpl.StreamingCall).Build();
-    }
-
-    /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
     public static ServerServiceDefinition BindService(BenchmarkServiceBase serviceImpl)
-    #pragma warning restore 0618
     {
       return ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_UnaryCall, serviceImpl.UnaryCall)
@@ -289,112 +223,6 @@
       get { return global::Grpc.Testing.ServicesReflection.Descriptor.Services[1]; }
     }
 
-    /// <summary>Client for WorkerService</summary>
-    [System.Obsolete("Client side interfaced will be removed in the next release. Use client class directly.")]
-    public interface IWorkerServiceClient
-    {
-      /// <summary>
-      ///  Start server with specified workload.
-      ///  First request sent specifies the ServerConfig followed by ServerStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test server
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Start server with specified workload.
-      ///  First request sent specifies the ServerConfig followed by ServerStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test server
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.ServerArgs, global::Grpc.Testing.ServerStatus> RunServer(CallOptions options);
-      /// <summary>
-      ///  Start client with specified workload.
-      ///  First request sent specifies the ClientConfig followed by ClientStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test client
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Start client with specified workload.
-      ///  First request sent specifies the ClientConfig followed by ClientStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test client
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.ClientArgs, global::Grpc.Testing.ClientStatus> RunClient(CallOptions options);
-      /// <summary>
-      ///  Just return the core count - unary call
-      /// </summary>
-      global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Just return the core count - unary call
-      /// </summary>
-      global::Grpc.Testing.CoreResponse CoreCount(global::Grpc.Testing.CoreRequest request, CallOptions options);
-      /// <summary>
-      ///  Just return the core count - unary call
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Just return the core count - unary call
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.CoreResponse> CoreCountAsync(global::Grpc.Testing.CoreRequest request, CallOptions options);
-      /// <summary>
-      ///  Quit this worker
-      /// </summary>
-      global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Quit this worker
-      /// </summary>
-      global::Grpc.Testing.Void QuitWorker(global::Grpc.Testing.Void request, CallOptions options);
-      /// <summary>
-      ///  Quit this worker
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  Quit this worker
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.Void> QuitWorkerAsync(global::Grpc.Testing.Void request, CallOptions options);
-    }
-
-    /// <summary>Interface of server-side implementations of WorkerService</summary>
-    [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
-    public interface IWorkerService
-    {
-      /// <summary>
-      ///  Start server with specified workload.
-      ///  First request sent specifies the ServerConfig followed by ServerStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test server
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
-      /// </summary>
-      global::System.Threading.Tasks.Task RunServer(IAsyncStreamReader<global::Grpc.Testing.ServerArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ServerStatus> responseStream, ServerCallContext context);
-      /// <summary>
-      ///  Start client with specified workload.
-      ///  First request sent specifies the ClientConfig followed by ClientStatus
-      ///  response. After that, a "Mark" can be sent anytime to request the latest
-      ///  stats. Closing the stream will initiate shutdown of the test client
-      ///  and once the shutdown has finished, the OK status is sent to terminate
-      ///  this RPC.
-      /// </summary>
-      global::System.Threading.Tasks.Task RunClient(IAsyncStreamReader<global::Grpc.Testing.ClientArgs> requestStream, IServerStreamWriter<global::Grpc.Testing.ClientStatus> responseStream, ServerCallContext context);
-      /// <summary>
-      ///  Just return the core count - unary call
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.CoreResponse> CoreCount(global::Grpc.Testing.CoreRequest request, ServerCallContext context);
-      /// <summary>
-      ///  Quit this worker
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.Void> QuitWorker(global::Grpc.Testing.Void request, ServerCallContext context);
-    }
-
     /// <summary>Base class for server-side implementations of WorkerService</summary>
     public abstract class WorkerServiceBase
     {
@@ -443,9 +271,7 @@
     }
 
     /// <summary>Client for WorkerService</summary>
-    #pragma warning disable 0618
-    public class WorkerServiceClient : ClientBase<WorkerServiceClient>, IWorkerServiceClient
-    #pragma warning restore 0618
+    public class WorkerServiceClient : ClientBase<WorkerServiceClient>
     {
       public WorkerServiceClient(Channel channel) : base(channel)
       {
@@ -579,21 +405,7 @@
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
-    public static ServerServiceDefinition BindService(IWorkerService serviceImpl)
-    #pragma warning restore 0618
-    {
-      return ServerServiceDefinition.CreateBuilder()
-          .AddMethod(__Method_RunServer, serviceImpl.RunServer)
-          .AddMethod(__Method_RunClient, serviceImpl.RunClient)
-          .AddMethod(__Method_CoreCount, serviceImpl.CoreCount)
-          .AddMethod(__Method_QuitWorker, serviceImpl.QuitWorker).Build();
-    }
-
-    /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
     public static ServerServiceDefinition BindService(WorkerServiceBase serviceImpl)
-    #pragma warning restore 0618
     {
       return ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_RunServer, serviceImpl.RunServer)
diff --git a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
index 9e35651..6c25201 100644
--- a/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
+++ b/src/csharp/Grpc.IntegrationTesting/TestGrpc.cs
@@ -105,127 +105,6 @@
       get { return global::Grpc.Testing.TestReflection.Descriptor.Services[0]; }
     }
 
-    /// <summary>Client for TestService</summary>
-    [System.Obsolete("Client side interfaced will be removed in the next release. Use client class directly.")]
-    public interface ITestServiceClient
-    {
-      /// <summary>
-      ///  One empty request followed by one empty response.
-      /// </summary>
-      global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One empty request followed by one empty response.
-      /// </summary>
-      global::Grpc.Testing.Empty EmptyCall(global::Grpc.Testing.Empty request, CallOptions options);
-      /// <summary>
-      ///  One empty request followed by one empty response.
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One empty request followed by one empty response.
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.Empty> EmptyCallAsync(global::Grpc.Testing.Empty request, CallOptions options);
-      /// <summary>
-      ///  One request followed by one response.
-      /// </summary>
-      global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One request followed by one response.
-      /// </summary>
-      global::Grpc.Testing.SimpleResponse UnaryCall(global::Grpc.Testing.SimpleRequest request, CallOptions options);
-      /// <summary>
-      ///  One request followed by one response.
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One request followed by one response.
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.SimpleResponse> UnaryCallAsync(global::Grpc.Testing.SimpleRequest request, CallOptions options);
-      /// <summary>
-      ///  One request followed by a sequence of responses (streamed download).
-      ///  The server returns the payload with client desired type and sizes.
-      /// </summary>
-      AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  One request followed by a sequence of responses (streamed download).
-      ///  The server returns the payload with client desired type and sizes.
-      /// </summary>
-      AsyncServerStreamingCall<global::Grpc.Testing.StreamingOutputCallResponse> StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, CallOptions options);
-      /// <summary>
-      ///  A sequence of requests followed by one response (streamed upload).
-      ///  The server returns the aggregated size of client payload as the result.
-      /// </summary>
-      AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  A sequence of requests followed by one response (streamed upload).
-      ///  The server returns the aggregated size of client payload as the result.
-      /// </summary>
-      AsyncClientStreamingCall<global::Grpc.Testing.StreamingInputCallRequest, global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(CallOptions options);
-      /// <summary>
-      ///  A sequence of requests with each request served by the server immediately.
-      ///  As one request could lead to multiple responses, this interface
-      ///  demonstrates the idea of full duplexing.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  A sequence of requests with each request served by the server immediately.
-      ///  As one request could lead to multiple responses, this interface
-      ///  demonstrates the idea of full duplexing.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> FullDuplexCall(CallOptions options);
-      /// <summary>
-      ///  A sequence of requests followed by a sequence of responses.
-      ///  The server buffers all the client requests and then serves them in order. A
-      ///  stream of responses are returned to the client when the server starts with
-      ///  first request.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  A sequence of requests followed by a sequence of responses.
-      ///  The server buffers all the client requests and then serves them in order. A
-      ///  stream of responses are returned to the client when the server starts with
-      ///  first request.
-      /// </summary>
-      AsyncDuplexStreamingCall<global::Grpc.Testing.StreamingOutputCallRequest, global::Grpc.Testing.StreamingOutputCallResponse> HalfDuplexCall(CallOptions options);
-    }
-
-    /// <summary>Interface of server-side implementations of TestService</summary>
-    [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
-    public interface ITestService
-    {
-      /// <summary>
-      ///  One empty request followed by one empty response.
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> EmptyCall(global::Grpc.Testing.Empty request, ServerCallContext context);
-      /// <summary>
-      ///  One request followed by one response.
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.SimpleResponse> UnaryCall(global::Grpc.Testing.SimpleRequest request, ServerCallContext context);
-      /// <summary>
-      ///  One request followed by a sequence of responses (streamed download).
-      ///  The server returns the payload with client desired type and sizes.
-      /// </summary>
-      global::System.Threading.Tasks.Task StreamingOutputCall(global::Grpc.Testing.StreamingOutputCallRequest request, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
-      /// <summary>
-      ///  A sequence of requests followed by one response (streamed upload).
-      ///  The server returns the aggregated size of client payload as the result.
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.StreamingInputCallResponse> StreamingInputCall(IAsyncStreamReader<global::Grpc.Testing.StreamingInputCallRequest> requestStream, ServerCallContext context);
-      /// <summary>
-      ///  A sequence of requests with each request served by the server immediately.
-      ///  As one request could lead to multiple responses, this interface
-      ///  demonstrates the idea of full duplexing.
-      /// </summary>
-      global::System.Threading.Tasks.Task FullDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
-      /// <summary>
-      ///  A sequence of requests followed by a sequence of responses.
-      ///  The server buffers all the client requests and then serves them in order. A
-      ///  stream of responses are returned to the client when the server starts with
-      ///  first request.
-      /// </summary>
-      global::System.Threading.Tasks.Task HalfDuplexCall(IAsyncStreamReader<global::Grpc.Testing.StreamingOutputCallRequest> requestStream, IServerStreamWriter<global::Grpc.Testing.StreamingOutputCallResponse> responseStream, ServerCallContext context);
-    }
-
     /// <summary>Base class for server-side implementations of TestService</summary>
     public abstract class TestServiceBase
     {
@@ -287,9 +166,7 @@
     }
 
     /// <summary>Client for TestService</summary>
-    #pragma warning disable 0618
-    public class TestServiceClient : ClientBase<TestServiceClient>, ITestServiceClient
-    #pragma warning restore 0618
+    public class TestServiceClient : ClientBase<TestServiceClient>
     {
       public TestServiceClient(Channel channel) : base(channel)
       {
@@ -445,23 +322,7 @@
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
-    public static ServerServiceDefinition BindService(ITestService serviceImpl)
-    #pragma warning restore 0618
-    {
-      return ServerServiceDefinition.CreateBuilder()
-          .AddMethod(__Method_EmptyCall, serviceImpl.EmptyCall)
-          .AddMethod(__Method_UnaryCall, serviceImpl.UnaryCall)
-          .AddMethod(__Method_StreamingOutputCall, serviceImpl.StreamingOutputCall)
-          .AddMethod(__Method_StreamingInputCall, serviceImpl.StreamingInputCall)
-          .AddMethod(__Method_FullDuplexCall, serviceImpl.FullDuplexCall)
-          .AddMethod(__Method_HalfDuplexCall, serviceImpl.HalfDuplexCall).Build();
-    }
-
-    /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
     public static ServerServiceDefinition BindService(TestServiceBase serviceImpl)
-    #pragma warning restore 0618
     {
       return ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_EmptyCall, serviceImpl.EmptyCall)
@@ -496,38 +357,6 @@
       get { return global::Grpc.Testing.TestReflection.Descriptor.Services[1]; }
     }
 
-    /// <summary>Client for UnimplementedService</summary>
-    [System.Obsolete("Client side interfaced will be removed in the next release. Use client class directly.")]
-    public interface IUnimplementedServiceClient
-    {
-      /// <summary>
-      ///  A call that no server should implement
-      /// </summary>
-      global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  A call that no server should implement
-      /// </summary>
-      global::Grpc.Testing.Empty UnimplementedCall(global::Grpc.Testing.Empty request, CallOptions options);
-      /// <summary>
-      ///  A call that no server should implement
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      /// <summary>
-      ///  A call that no server should implement
-      /// </summary>
-      AsyncUnaryCall<global::Grpc.Testing.Empty> UnimplementedCallAsync(global::Grpc.Testing.Empty request, CallOptions options);
-    }
-
-    /// <summary>Interface of server-side implementations of UnimplementedService</summary>
-    [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
-    public interface IUnimplementedService
-    {
-      /// <summary>
-      ///  A call that no server should implement
-      /// </summary>
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> UnimplementedCall(global::Grpc.Testing.Empty request, ServerCallContext context);
-    }
-
     /// <summary>Base class for server-side implementations of UnimplementedService</summary>
     public abstract class UnimplementedServiceBase
     {
@@ -542,9 +371,7 @@
     }
 
     /// <summary>Client for UnimplementedService</summary>
-    #pragma warning disable 0618
-    public class UnimplementedServiceClient : ClientBase<UnimplementedServiceClient>, IUnimplementedServiceClient
-    #pragma warning restore 0618
+    public class UnimplementedServiceClient : ClientBase<UnimplementedServiceClient>
     {
       public UnimplementedServiceClient(Channel channel) : base(channel)
       {
@@ -602,18 +429,7 @@
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
-    public static ServerServiceDefinition BindService(IUnimplementedService serviceImpl)
-    #pragma warning restore 0618
-    {
-      return ServerServiceDefinition.CreateBuilder()
-          .AddMethod(__Method_UnimplementedCall, serviceImpl.UnimplementedCall).Build();
-    }
-
-    /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
     public static ServerServiceDefinition BindService(UnimplementedServiceBase serviceImpl)
-    #pragma warning restore 0618
     {
       return ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_UnimplementedCall, serviceImpl.UnimplementedCall).Build();
@@ -651,28 +467,6 @@
       get { return global::Grpc.Testing.TestReflection.Descriptor.Services[2]; }
     }
 
-    /// <summary>Client for ReconnectService</summary>
-    [System.Obsolete("Client side interfaced will be removed in the next release. Use client class directly.")]
-    public interface IReconnectServiceClient
-    {
-      global::Grpc.Testing.Empty Start(global::Grpc.Testing.ReconnectParams request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      global::Grpc.Testing.Empty Start(global::Grpc.Testing.ReconnectParams request, CallOptions options);
-      AsyncUnaryCall<global::Grpc.Testing.Empty> StartAsync(global::Grpc.Testing.ReconnectParams request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncUnaryCall<global::Grpc.Testing.Empty> StartAsync(global::Grpc.Testing.ReconnectParams request, CallOptions options);
-      global::Grpc.Testing.ReconnectInfo Stop(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      global::Grpc.Testing.ReconnectInfo Stop(global::Grpc.Testing.Empty request, CallOptions options);
-      AsyncUnaryCall<global::Grpc.Testing.ReconnectInfo> StopAsync(global::Grpc.Testing.Empty request, Metadata headers = null, DateTime? deadline = null, CancellationToken cancellationToken = default(CancellationToken));
-      AsyncUnaryCall<global::Grpc.Testing.ReconnectInfo> StopAsync(global::Grpc.Testing.Empty request, CallOptions options);
-    }
-
-    /// <summary>Interface of server-side implementations of ReconnectService</summary>
-    [System.Obsolete("Service implementations should inherit from the generated abstract base class instead.")]
-    public interface IReconnectService
-    {
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.Empty> Start(global::Grpc.Testing.ReconnectParams request, ServerCallContext context);
-      global::System.Threading.Tasks.Task<global::Grpc.Testing.ReconnectInfo> Stop(global::Grpc.Testing.Empty request, ServerCallContext context);
-    }
-
     /// <summary>Base class for server-side implementations of ReconnectService</summary>
     public abstract class ReconnectServiceBase
     {
@@ -689,9 +483,7 @@
     }
 
     /// <summary>Client for ReconnectService</summary>
-    #pragma warning disable 0618
-    public class ReconnectServiceClient : ClientBase<ReconnectServiceClient>, IReconnectServiceClient
-    #pragma warning restore 0618
+    public class ReconnectServiceClient : ClientBase<ReconnectServiceClient>
     {
       public ReconnectServiceClient(Channel channel) : base(channel)
       {
@@ -753,19 +545,7 @@
     }
 
     /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
-    public static ServerServiceDefinition BindService(IReconnectService serviceImpl)
-    #pragma warning restore 0618
-    {
-      return ServerServiceDefinition.CreateBuilder()
-          .AddMethod(__Method_Start, serviceImpl.Start)
-          .AddMethod(__Method_Stop, serviceImpl.Stop).Build();
-    }
-
-    /// <summary>Creates service definition that can be registered with a server</summary>
-    #pragma warning disable 0618
     public static ServerServiceDefinition BindService(ReconnectServiceBase serviceImpl)
-    #pragma warning restore 0618
     {
       return ServerServiceDefinition.CreateBuilder()
           .AddMethod(__Method_Start, serviceImpl.Start)