public Builder mergeFrom(JSystemPiqi.system_response other) {
        if (other == JSystemPiqi.system_response.getDefaultInstance()) return this;
        if (other.hasOk()) {
          setOk(other.getOk());
        }
        if (other.hasError()) {
          mergeError(other.getError());
        }
        this.mergeUnknownFields(other.getUnknownFields());
        return this;
      }