public com.xingqiba.MessageProtoHandler.ChatMessage buildPartial() {
   com.xingqiba.MessageProtoHandler.ChatMessage result =
       new com.xingqiba.MessageProtoHandler.ChatMessage(this);
   int from_bitField0_ = bitField0_;
   int to_bitField0_ = 0;
   if (((from_bitField0_ & 0x00000001) == 0x00000001)) {
     to_bitField0_ |= 0x00000001;
   }
   result.chatChannel_ = chatChannel_;
   if (((from_bitField0_ & 0x00000002) == 0x00000002)) {
     to_bitField0_ |= 0x00000002;
   }
   result.fromId_ = fromId_;
   if (((from_bitField0_ & 0x00000004) == 0x00000004)) {
     to_bitField0_ |= 0x00000004;
   }
   result.toId_ = toId_;
   if (((from_bitField0_ & 0x00000008) == 0x00000008)) {
     to_bitField0_ |= 0x00000008;
   }
   result.name_ = name_;
   if (((from_bitField0_ & 0x00000010) == 0x00000010)) {
     to_bitField0_ |= 0x00000010;
   }
   result.groupId_ = groupId_;
   if (((from_bitField0_ & 0x00000020) == 0x00000020)) {
     to_bitField0_ |= 0x00000020;
   }
   result.message_ = message_;
   result.bitField0_ = to_bitField0_;
   onBuilt();
   return result;
 }