/**
     *
     *
     * <pre>
     * Clients should wait at least this long between retrying the same request.
     * </pre>
     *
     * <code>optional .google.protobuf.Duration retry_delay = 1;</code>
     */
    public Builder setRetryDelay(com.google.protobuf.Duration.Builder builderForValue) {
      if (retryDelayBuilder_ == null) {
        retryDelay_ = builderForValue.build();
        onChanged();
      } else {
        retryDelayBuilder_.setMessage(builderForValue.build());
      }

      return this;
    }