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

        if (chatUserBuilder_ == null) {
          chatUser_ = null;
        } else {
          chatUser_ = null;
          chatUserBuilder_ = null;
        }
        if (chatUserListBuilder_ == null) {
          chatUserList_ = java.util.Collections.emptyList();
          bitField0_ = (bitField0_ & ~0x00000004);
        } else {
          chatUserListBuilder_.clear();
        }
        if (chatGroupListBuilder_ == null) {
          chatGroupList_ = java.util.Collections.emptyList();
          bitField0_ = (bitField0_ & ~0x00000008);
        } else {
          chatGroupListBuilder_.clear();
        }
        return this;
      }
Protobuf type {@code org.anychat.protobuf.ws.LoginChatServerS}
AnyChatServer/src/main/java/org/anychat/protobuf/ws/LoginChatProto.java