public Builder clearOneof(
          com.google.protobuf.Descriptors.OneofDescriptor oneof) {
        return (Builder) super.clearOneof(oneof);
      }
Protobuf type {@code org.anychat.protobuf.ws.UserMessageReceiveC}
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java