private void ensureReactionTypesIsMutable() {
            if (!reactionTypes_.isModifiable()) {
                reactionTypes_ = makeMutableCopy(reactionTypes_);
            }
            bitField0_ |= 0x00000002;
        }
<code>int64 message_id = 1;</code>

@return This builder for chaining.
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/request/message/CreateMessageReactionsRequest.java