public void writeTo(com.google.protobuf.CodedOutputStream output)
                        throws java.io.IOException {
      getSerializedSize();
      if (((bitField0_ & 0x00000001) == 0x00000001)) {
        output.writeBytes(1, getNameBytes());
      }
      if (((bitField0_ & 0x00000020) == 0x00000020)) {
        output.writeBytes(2, getExtendeeBytes());
      }
      if (((bitField0_ & 0x00000002) == 0x00000002)) {
        output.writeInt32(3, number_);
      }
      if (((bitField0_ & 0x00000004) == 0x00000004)) {
        output.writeEnum(4, label_.getNumber());
      }
      if (((bitField0_ & 0x00000008) == 0x00000008)) {
        output.writeEnum(5, type_.getNumber());
      }
      if (((bitField0_ & 0x00000010) == 0x00000010)) {
        output.writeBytes(6, getTypeNameBytes());
      }
      if (((bitField0_ & 0x00000040) == 0x00000040)) {
        output.writeBytes(7, getDefaultValueBytes());
      }
      if (((bitField0_ & 0x00000080) == 0x00000080)) {
        output.writeMessage(8, options_);
      }
      getUnknownFields().writeTo(output);
    }