private void ensureUserIdsForCommonGroupsIsMutable() {
            if (!userIdsForCommonGroups_.isModifiable()) {
                userIdsForCommonGroups_ = makeMutableCopy(userIdsForCommonGroups_);
            }
            bitField0_ |= 0x00000002;
        }
<code>optional int64 last_updated_date = 1;</code>

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