PR feedback 3

Author: jinseopkim0

google-cloud-bigtable/pom.xml

@@ -281,7 +281,6 @@
     <dependency>
       <groupId>com.google.api.grpc</groupId>
       <artifactId>grpc-google-cloud-bigtable-admin-v2</artifactId>
-      <scope>test</scope>
     </dependency>
     <dependency>
       <groupId>com.google.cloud</groupId>

google-cloud-bigtable/src/main/java/com/google/cloud/bigtable/admin/v2/BigtableTableAdminClientV2.java

@@ -41,8 +41,6 @@
 import com.google.longrunning.Operation;
 import com.google.protobuf.Empty;
 import io.grpc.MethodDescriptor;
-import io.grpc.MethodDescriptor.Marshaller;
-import io.grpc.MethodDescriptor.MethodType;
 import java.io.IOException;
 import java.io.InputStream;
 import java.time.Duration;
@@ -142,37 +140,13 @@ private AwaitConsistencyCallable createAwaitConsistencyCallable(
       createOptimizeRestoredTableOperationBaseCallable(
           com.google.api.gax.rpc.ClientContext clientContext) throws IOException {
 
+    @SuppressWarnings("unchecked")
+    MethodDescriptor<Void, Operation> fakeDescriptor =
+        (MethodDescriptor<Void, Operation>)
+            (MethodDescriptor<?, ?>) com.google.bigtable.admin.v2.BigtableTableAdminGrpc.getUpdateTableMethod();
+
     GrpcCallSettings<Void, Operation> unusedInitialCallSettings =
-        GrpcCallSettings.create(
-            MethodDescriptor.<Void, Operation>newBuilder()
-                .setType(MethodType.UNARY)
-                .setFullMethodName(
-                    "google.bigtable.admin.v2.BigtableTableAdmin/OptimizeRestoredTable")
-                .setRequestMarshaller(
-                    new Marshaller<Void>() {
-                      @Override
-                      public InputStream stream(Void value) {
-                        throw new UnsupportedOperationException("not used");
-                      }
-
-                      @Override
-                      public Void parse(InputStream stream) {
-                        throw new UnsupportedOperationException("not used");
-                      }
-                    })
-                .setResponseMarshaller(
-                    new Marshaller<Operation>() {
-                      @Override
-                      public InputStream stream(Operation value) {
-                        throw new UnsupportedOperationException("not used");
-                      }
-
-                      @Override
-                      public Operation parse(InputStream stream) {
-                        throw new UnsupportedOperationException("not used");
-                      }
-                    })
-                .build());
+        GrpcCallSettings.create(fakeDescriptor);
 
     final MetadataTransformer<OptimizeRestoredTableMetadata> protoMetadataTransformer =
         MetadataTransformer.create(OptimizeRestoredTableMetadata.class);