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;
   }
 }
 public Builder clear() {
   super.clear();
   if (retryDelayBuilder_ == null) {
     retryDelay_ = null;
   } else {
     retryDelay_ = null;
     retryDelayBuilder_ = null;
   }
   return this;
 }
      public Builder clear() {
        super.clear();
        number1_ = 0D;

        number2_ = 0D;

        operation_ = 0;

        return this;
      }
      public Builder clear() {
        super.clear();
        result_ = 0D;

        return this;
      }