public Builder mergeFrom(com.google.protobuf.Message other) {
   if (other instanceof com.google.rpc.RetryInfo) {
     return mergeFrom((com.google.rpc.RetryInfo) other);
   } else {
     super.mergeFrom(other);
     return this;
   }
 }
 public Builder mergeFrom(com.google.protobuf.Message other) {
   if (other instanceof io.grpc.examples.CalculatorOuterClass.CalculatorRequest) {
     return mergeFrom((io.grpc.examples.CalculatorOuterClass.CalculatorRequest) other);
   } else {
     super.mergeFrom(other);
     return this;
   }
 }