private void ensureGroupIdsIsMutable() {
            if (!groupIds_.isModifiable()) {
                groupIds_ = makeMutableCopy(groupIds_);
            }
            bitField0_ |= 0x00000002;
        }
<code>repeated int64 user_ids = 1;</code>

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