Introduced InteropContextInspector to be able to peek into server contexts during interop testing.
diff --git a/test/cpp/interop/server_helper.cc b/test/cpp/interop/server_helper.cc
index c2e750d..0f8b89c 100644
--- a/test/cpp/interop/server_helper.cc
+++ b/test/cpp/interop/server_helper.cc
@@ -58,5 +58,9 @@
   }
 }
 
+InteropContextInspector::InteropContextInspector(
+    const ::grpc::ServerContext& context)
+    : context_(context) {}
+
 }  // namespace testing
 }  // namespace grpc
diff --git a/test/cpp/interop/server_helper.h b/test/cpp/interop/server_helper.h
index f98e67b..52332bf 100644
--- a/test/cpp/interop/server_helper.h
+++ b/test/cpp/interop/server_helper.h
@@ -36,6 +36,7 @@
 
 #include <memory>
 
+#include <grpc++/server_context.h>
 #include <grpc++/server_credentials.h>
 
 namespace grpc {
@@ -43,6 +44,16 @@
 
 std::shared_ptr<ServerCredentials> CreateInteropServerCredentials();
 
+class InteropContextInspector {
+ public:
+  InteropContextInspector (const ::grpc::ServerContext& context);
+
+  // Inspector methods, able to peek inside ServerContext go here.
+
+ private:
+  const ::grpc::ServerContext& context_;
+};
+
 }  // namespace testing
 }  // namespace grpc