Regen docs (#373)

diff --git a/docs/dyn/appengine_v1.apps.services.versions.html b/docs/dyn/appengine_v1.apps.services.versions.html
index 8d15d33..a33a374 100644
--- a/docs/dyn/appengine_v1.apps.services.versions.html
+++ b/docs/dyn/appengine_v1.apps.services.versions.html
@@ -130,6 +130,14 @@
       },
     ],
     "id": "A String", # Relative name of the version within the service. Example: v1. Version names can contain only lowercase letters, numbers, or hyphens. Reserved names: "default", "latest", and any name with the prefix "ah-".
+    "readinessCheck": { # Readiness checking configuration for VM instances. Unhealthy instances are removed from traffic rotation. # Configures readiness health checking for VM instances. Unhealthy instances are not put into the backend traffic rotation.Only returned in GET requests if view=FULL is set.
+      "checkInterval": "A String", # Interval between health checks.
+      "unhealthyThreshold": 42, # Number of consecutive failed checks required before removing traffic.
+      "healthyThreshold": 42, # Number of consecutive successful checks required before receiving traffic.
+      "host": "A String", # Host header to send when performing a HTTP Readiness check. Example: "myapp.appspot.com"
+      "timeout": "A String", # Time before the check is considered failed.
+      "path": "A String", # The request path.
+    },
     "apiConfig": { # Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/) configuration for API handlers. # Serving configuration for Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/).Only returned in GET requests if view=FULL is set.
       "url": "A String", # URL to serve the endpoint at.
       "securityLevel": "A String", # Security (HTTPS) enforcement for this URL.
@@ -217,14 +225,15 @@
           "sha1Sum": "A String", # The SHA1 hash of the file, in hex.
         },
       },
-      "container": { # Docker image that is used to start a VM container for the version you deploy. # A Docker image that App Engine uses to run the version. Only applicable for instances in App Engine flexible environment.
-        "image": "A String", # URI to the hosted container image in a Docker repository. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
+      "container": { # Docker image that is used to create a container and start a VM instance for the version that you deploy. Only applicable for instances running in the App Engine flexible environment. # The Docker image for the container that runs the version. Only applicable for instances running in the App Engine flexible environment.
+        "image": "A String", # URI to the hosted container image in Google Container Registry. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
       },
       "zip": { # The zip file information for a zip deployment. # The zip file for this deployment, if this is a zip deployment.
         "filesCount": 42, # An estimate of the number of files in a zip for a zip deployment. If set, must be greater than or equal to the actual number of files. Used for optimizing performance; if not provided, deployment may be slow.
         "sourceUrl": "A String", # URL of the zip file to deploy from. Must be a URL to a resource in Google Cloud Storage in the form 'http(s)://storage.googleapis.com//'.
       },
     },
+    "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
     "createTime": "A String", # Time that this version was created.@OutputOnly
     "network": { # Extra network settings. Only applicable for VM runtimes. # Extra network settings. Only applicable for VM runtimes.
       "instanceTag": "A String", # Tag to apply to the VM instance during creation.
@@ -234,7 +243,15 @@
       "name": "A String", # Google Cloud Platform network where the virtual machines are created. Specify the short name, not the resource path.Defaults to default.
       "subnetworkName": "A String", # Google Cloud Platform sub-network where the virtual machines are created. Specify the short name, not the resource path.If a subnetwork name is specified, a network name will also be required unless it is for the default network. If the network the VM instance is being created in is a Legacy network, then the IP address is allocated from the IPv4Range. If the network the VM instance is being created in is an auto Subnet Mode Network, then only network name should be specified (not the subnetwork_name) and the IP address is created from the IPCidrRange of the subnetwork that exists in that zone for that network. If the network the VM instance is being created in is a custom Subnet Mode Network, then the subnetwork_name must be specified and the IP address is created from the IPCidrRange of the subnetwork.If specified, the subnetwork must exist in the same region as the Flex app.
     },
-    "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
+    "livenessCheck": { # Health checking configuration for VM instances. Unhealthy instances are killed and replaced with new instances. # Configures liveness health checking for VM instances. Unhealthy instances are stopped and replaced with new instancesOnly returned in GET requests if view=FULL is set.
+      "checkInterval": "A String", # Interval between health checks.
+      "initialDelay": "A String", # The initial delay before starting to execute the checks.
+      "unhealthyThreshold": 42, # Number of consecutive failed checks required before considering the VM unhealthy.
+      "healthyThreshold": 42, # Number of consecutive successful checks required before considering the VM healthy.
+      "host": "A String", # Host header to send when performing a HTTP Liveness check. Example: "myapp.appspot.com"
+      "timeout": "A String", # Time before the check is considered failed.
+      "path": "A String", # The request path.
+    },
     "name": "A String", # Full path to the Version resource in the API. Example: apps/myapp/services/default/versions/v1.@OutputOnly
     "handlers": [ # An ordered list of URL-matching patterns that should be applied to incoming requests. The first matching URL handles the request and other request handlers are not attempted.Only returned in GET requests if view=FULL is set.
       { # URL pattern and description of how the URL should be handled. App Engine can handle URLs by executing application code or by serving static files uploaded with the version, such as images, CSS, or JavaScript.
@@ -362,6 +379,14 @@
         },
       ],
       "id": "A String", # Relative name of the version within the service. Example: v1. Version names can contain only lowercase letters, numbers, or hyphens. Reserved names: "default", "latest", and any name with the prefix "ah-".
+      "readinessCheck": { # Readiness checking configuration for VM instances. Unhealthy instances are removed from traffic rotation. # Configures readiness health checking for VM instances. Unhealthy instances are not put into the backend traffic rotation.Only returned in GET requests if view=FULL is set.
+        "checkInterval": "A String", # Interval between health checks.
+        "unhealthyThreshold": 42, # Number of consecutive failed checks required before removing traffic.
+        "healthyThreshold": 42, # Number of consecutive successful checks required before receiving traffic.
+        "host": "A String", # Host header to send when performing a HTTP Readiness check. Example: "myapp.appspot.com"
+        "timeout": "A String", # Time before the check is considered failed.
+        "path": "A String", # The request path.
+      },
       "apiConfig": { # Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/) configuration for API handlers. # Serving configuration for Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/).Only returned in GET requests if view=FULL is set.
         "url": "A String", # URL to serve the endpoint at.
         "securityLevel": "A String", # Security (HTTPS) enforcement for this URL.
@@ -449,14 +474,15 @@
             "sha1Sum": "A String", # The SHA1 hash of the file, in hex.
           },
         },
-        "container": { # Docker image that is used to start a VM container for the version you deploy. # A Docker image that App Engine uses to run the version. Only applicable for instances in App Engine flexible environment.
-          "image": "A String", # URI to the hosted container image in a Docker repository. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
+        "container": { # Docker image that is used to create a container and start a VM instance for the version that you deploy. Only applicable for instances running in the App Engine flexible environment. # The Docker image for the container that runs the version. Only applicable for instances running in the App Engine flexible environment.
+          "image": "A String", # URI to the hosted container image in Google Container Registry. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
         },
         "zip": { # The zip file information for a zip deployment. # The zip file for this deployment, if this is a zip deployment.
           "filesCount": 42, # An estimate of the number of files in a zip for a zip deployment. If set, must be greater than or equal to the actual number of files. Used for optimizing performance; if not provided, deployment may be slow.
           "sourceUrl": "A String", # URL of the zip file to deploy from. Must be a URL to a resource in Google Cloud Storage in the form 'http(s)://storage.googleapis.com//'.
         },
       },
+      "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
       "createTime": "A String", # Time that this version was created.@OutputOnly
       "network": { # Extra network settings. Only applicable for VM runtimes. # Extra network settings. Only applicable for VM runtimes.
         "instanceTag": "A String", # Tag to apply to the VM instance during creation.
@@ -466,7 +492,15 @@
         "name": "A String", # Google Cloud Platform network where the virtual machines are created. Specify the short name, not the resource path.Defaults to default.
         "subnetworkName": "A String", # Google Cloud Platform sub-network where the virtual machines are created. Specify the short name, not the resource path.If a subnetwork name is specified, a network name will also be required unless it is for the default network. If the network the VM instance is being created in is a Legacy network, then the IP address is allocated from the IPv4Range. If the network the VM instance is being created in is an auto Subnet Mode Network, then only network name should be specified (not the subnetwork_name) and the IP address is created from the IPCidrRange of the subnetwork that exists in that zone for that network. If the network the VM instance is being created in is a custom Subnet Mode Network, then the subnetwork_name must be specified and the IP address is created from the IPCidrRange of the subnetwork.If specified, the subnetwork must exist in the same region as the Flex app.
       },
-      "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
+      "livenessCheck": { # Health checking configuration for VM instances. Unhealthy instances are killed and replaced with new instances. # Configures liveness health checking for VM instances. Unhealthy instances are stopped and replaced with new instancesOnly returned in GET requests if view=FULL is set.
+        "checkInterval": "A String", # Interval between health checks.
+        "initialDelay": "A String", # The initial delay before starting to execute the checks.
+        "unhealthyThreshold": 42, # Number of consecutive failed checks required before considering the VM unhealthy.
+        "healthyThreshold": 42, # Number of consecutive successful checks required before considering the VM healthy.
+        "host": "A String", # Host header to send when performing a HTTP Liveness check. Example: "myapp.appspot.com"
+        "timeout": "A String", # Time before the check is considered failed.
+        "path": "A String", # The request path.
+      },
       "name": "A String", # Full path to the Version resource in the API. Example: apps/myapp/services/default/versions/v1.@OutputOnly
       "handlers": [ # An ordered list of URL-matching patterns that should be applied to incoming requests. The first matching URL handles the request and other request handlers are not attempted.Only returned in GET requests if view=FULL is set.
         { # URL pattern and description of how the URL should be handled. App Engine can handle URLs by executing application code or by serving static files uploaded with the version, such as images, CSS, or JavaScript.
@@ -539,6 +573,14 @@
             },
           ],
           "id": "A String", # Relative name of the version within the service. Example: v1. Version names can contain only lowercase letters, numbers, or hyphens. Reserved names: "default", "latest", and any name with the prefix "ah-".
+          "readinessCheck": { # Readiness checking configuration for VM instances. Unhealthy instances are removed from traffic rotation. # Configures readiness health checking for VM instances. Unhealthy instances are not put into the backend traffic rotation.Only returned in GET requests if view=FULL is set.
+            "checkInterval": "A String", # Interval between health checks.
+            "unhealthyThreshold": 42, # Number of consecutive failed checks required before removing traffic.
+            "healthyThreshold": 42, # Number of consecutive successful checks required before receiving traffic.
+            "host": "A String", # Host header to send when performing a HTTP Readiness check. Example: "myapp.appspot.com"
+            "timeout": "A String", # Time before the check is considered failed.
+            "path": "A String", # The request path.
+          },
           "apiConfig": { # Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/) configuration for API handlers. # Serving configuration for Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/).Only returned in GET requests if view=FULL is set.
             "url": "A String", # URL to serve the endpoint at.
             "securityLevel": "A String", # Security (HTTPS) enforcement for this URL.
@@ -626,14 +668,15 @@
                 "sha1Sum": "A String", # The SHA1 hash of the file, in hex.
               },
             },
-            "container": { # Docker image that is used to start a VM container for the version you deploy. # A Docker image that App Engine uses to run the version. Only applicable for instances in App Engine flexible environment.
-              "image": "A String", # URI to the hosted container image in a Docker repository. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
+            "container": { # Docker image that is used to create a container and start a VM instance for the version that you deploy. Only applicable for instances running in the App Engine flexible environment. # The Docker image for the container that runs the version. Only applicable for instances running in the App Engine flexible environment.
+              "image": "A String", # URI to the hosted container image in Google Container Registry. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
             },
             "zip": { # The zip file information for a zip deployment. # The zip file for this deployment, if this is a zip deployment.
               "filesCount": 42, # An estimate of the number of files in a zip for a zip deployment. If set, must be greater than or equal to the actual number of files. Used for optimizing performance; if not provided, deployment may be slow.
               "sourceUrl": "A String", # URL of the zip file to deploy from. Must be a URL to a resource in Google Cloud Storage in the form 'http(s)://storage.googleapis.com//'.
             },
           },
+          "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
           "createTime": "A String", # Time that this version was created.@OutputOnly
           "network": { # Extra network settings. Only applicable for VM runtimes. # Extra network settings. Only applicable for VM runtimes.
             "instanceTag": "A String", # Tag to apply to the VM instance during creation.
@@ -643,7 +686,15 @@
             "name": "A String", # Google Cloud Platform network where the virtual machines are created. Specify the short name, not the resource path.Defaults to default.
             "subnetworkName": "A String", # Google Cloud Platform sub-network where the virtual machines are created. Specify the short name, not the resource path.If a subnetwork name is specified, a network name will also be required unless it is for the default network. If the network the VM instance is being created in is a Legacy network, then the IP address is allocated from the IPv4Range. If the network the VM instance is being created in is an auto Subnet Mode Network, then only network name should be specified (not the subnetwork_name) and the IP address is created from the IPCidrRange of the subnetwork that exists in that zone for that network. If the network the VM instance is being created in is a custom Subnet Mode Network, then the subnetwork_name must be specified and the IP address is created from the IPCidrRange of the subnetwork.If specified, the subnetwork must exist in the same region as the Flex app.
           },
-          "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
+          "livenessCheck": { # Health checking configuration for VM instances. Unhealthy instances are killed and replaced with new instances. # Configures liveness health checking for VM instances. Unhealthy instances are stopped and replaced with new instancesOnly returned in GET requests if view=FULL is set.
+            "checkInterval": "A String", # Interval between health checks.
+            "initialDelay": "A String", # The initial delay before starting to execute the checks.
+            "unhealthyThreshold": 42, # Number of consecutive failed checks required before considering the VM unhealthy.
+            "healthyThreshold": 42, # Number of consecutive successful checks required before considering the VM healthy.
+            "host": "A String", # Host header to send when performing a HTTP Liveness check. Example: "myapp.appspot.com"
+            "timeout": "A String", # Time before the check is considered failed.
+            "path": "A String", # The request path.
+          },
           "name": "A String", # Full path to the Version resource in the API. Example: apps/myapp/services/default/versions/v1.@OutputOnly
           "handlers": [ # An ordered list of URL-matching patterns that should be applied to incoming requests. The first matching URL handles the request and other request handlers are not attempted.Only returned in GET requests if view=FULL is set.
             { # URL pattern and description of how the URL should be handled. App Engine can handle URLs by executing application code or by serving static files uploaded with the version, such as images, CSS, or JavaScript.
@@ -725,6 +776,14 @@
       },
     ],
     "id": "A String", # Relative name of the version within the service. Example: v1. Version names can contain only lowercase letters, numbers, or hyphens. Reserved names: "default", "latest", and any name with the prefix "ah-".
+    "readinessCheck": { # Readiness checking configuration for VM instances. Unhealthy instances are removed from traffic rotation. # Configures readiness health checking for VM instances. Unhealthy instances are not put into the backend traffic rotation.Only returned in GET requests if view=FULL is set.
+      "checkInterval": "A String", # Interval between health checks.
+      "unhealthyThreshold": 42, # Number of consecutive failed checks required before removing traffic.
+      "healthyThreshold": 42, # Number of consecutive successful checks required before receiving traffic.
+      "host": "A String", # Host header to send when performing a HTTP Readiness check. Example: "myapp.appspot.com"
+      "timeout": "A String", # Time before the check is considered failed.
+      "path": "A String", # The request path.
+    },
     "apiConfig": { # Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/) configuration for API handlers. # Serving configuration for Google Cloud Endpoints (https://cloud.google.com/appengine/docs/python/endpoints/).Only returned in GET requests if view=FULL is set.
       "url": "A String", # URL to serve the endpoint at.
       "securityLevel": "A String", # Security (HTTPS) enforcement for this URL.
@@ -812,14 +871,15 @@
           "sha1Sum": "A String", # The SHA1 hash of the file, in hex.
         },
       },
-      "container": { # Docker image that is used to start a VM container for the version you deploy. # A Docker image that App Engine uses to run the version. Only applicable for instances in App Engine flexible environment.
-        "image": "A String", # URI to the hosted container image in a Docker repository. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
+      "container": { # Docker image that is used to create a container and start a VM instance for the version that you deploy. Only applicable for instances running in the App Engine flexible environment. # The Docker image for the container that runs the version. Only applicable for instances running in the App Engine flexible environment.
+        "image": "A String", # URI to the hosted container image in Google Container Registry. The URI must be fully qualified and include a tag or digest. Examples: "gcr.io/my-project/image:tag" or "gcr.io/my-project/image@digest"
       },
       "zip": { # The zip file information for a zip deployment. # The zip file for this deployment, if this is a zip deployment.
         "filesCount": 42, # An estimate of the number of files in a zip for a zip deployment. If set, must be greater than or equal to the actual number of files. Used for optimizing performance; if not provided, deployment may be slow.
         "sourceUrl": "A String", # URL of the zip file to deploy from. Must be a URL to a resource in Google Cloud Storage in the form 'http(s)://storage.googleapis.com//'.
       },
     },
+    "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
     "createTime": "A String", # Time that this version was created.@OutputOnly
     "network": { # Extra network settings. Only applicable for VM runtimes. # Extra network settings. Only applicable for VM runtimes.
       "instanceTag": "A String", # Tag to apply to the VM instance during creation.
@@ -829,7 +889,15 @@
       "name": "A String", # Google Cloud Platform network where the virtual machines are created. Specify the short name, not the resource path.Defaults to default.
       "subnetworkName": "A String", # Google Cloud Platform sub-network where the virtual machines are created. Specify the short name, not the resource path.If a subnetwork name is specified, a network name will also be required unless it is for the default network. If the network the VM instance is being created in is a Legacy network, then the IP address is allocated from the IPv4Range. If the network the VM instance is being created in is an auto Subnet Mode Network, then only network name should be specified (not the subnetwork_name) and the IP address is created from the IPCidrRange of the subnetwork that exists in that zone for that network. If the network the VM instance is being created in is a custom Subnet Mode Network, then the subnetwork_name must be specified and the IP address is created from the IPCidrRange of the subnetwork.If specified, the subnetwork must exist in the same region as the Flex app.
     },
-    "nobuildFilesRegex": "A String", # Files that match this pattern will not be built into this version. Only applicable for Go runtimes.Only returned in GET requests if view=FULL is set.
+    "livenessCheck": { # Health checking configuration for VM instances. Unhealthy instances are killed and replaced with new instances. # Configures liveness health checking for VM instances. Unhealthy instances are stopped and replaced with new instancesOnly returned in GET requests if view=FULL is set.
+      "checkInterval": "A String", # Interval between health checks.
+      "initialDelay": "A String", # The initial delay before starting to execute the checks.
+      "unhealthyThreshold": 42, # Number of consecutive failed checks required before considering the VM unhealthy.
+      "healthyThreshold": 42, # Number of consecutive successful checks required before considering the VM healthy.
+      "host": "A String", # Host header to send when performing a HTTP Liveness check. Example: "myapp.appspot.com"
+      "timeout": "A String", # Time before the check is considered failed.
+      "path": "A String", # The request path.
+    },
     "name": "A String", # Full path to the Version resource in the API. Example: apps/myapp/services/default/versions/v1.@OutputOnly
     "handlers": [ # An ordered list of URL-matching patterns that should be applied to incoming requests. The first matching URL handles the request and other request handlers are not attempted.Only returned in GET requests if view=FULL is set.
       { # URL pattern and description of how the URL should be handled. App Engine can handle URLs by executing application code or by serving static files uploaded with the version, such as images, CSS, or JavaScript.