private void maybeForceBuilderInitialization() {
        if (com.google.protobuf.GeneratedMessageV3
                .alwaysUseFieldBuilders) {
          getMessageFieldBuilder();
        }
      }
Protobuf type {@code org.anychat.protobuf.ws.GroupMessageS}
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java