public Builder clear() {
        super.clear();
        wsOpCode_ = "";

        if (messageBuilder_ == null) {
          message_ = null;
        } else {
          message_ = null;
          messageBuilder_ = null;
        }
        toUserId_ = "";

        return this;
      }
Protobuf type {@code org.anychat.protobuf.ws.ToUserMessageS}
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java