update post processing script

Author: ohmayr

.librarian/generator-input/client-post-processing/spanner-integration.yaml

@@ -108,3 +108,16 @@ replacements:
     after: |
       \g<1>        self._metrics_interceptor = None
     count: 1
+  - paths: 
+      - packages/google-cloud-spanner/google/cloud/spanner_v1/services/spanner/transports/grpc.py
+    before: '([ \t]+)(\("grpc\.keepalive_time_ms", 120000\),\n[ \t]+\](?:,\n[ \t]*|\n[ \t]*)\)\n+)([ \t]+)(self\._interceptor = _LoggingClientInterceptor\(\)\n)'
+    after: |
+      \g<1>\g<2>\g<3># Wrap the gRPC channel with the metric interceptor
+      \g<3>if metrics_interceptor is not None:
+      \g<3>    self._metrics_interceptor = metrics_interceptor
+      \g<3>    self._grpc_channel = grpc.intercept_channel(
+      \g<3>        self._grpc_channel, metrics_interceptor
+      \g<3>    )
+
+      \g<3>\g<4>
+    count: 1