private com.google.protobuf.RepeatedFieldBuilder<im.turms.server.common.access.client.dto.model.user.UserRelationshipGroup, im.turms.server.common.access.client.dto.model.user.UserRelationshipGroup.Builder, im.turms.server.common.access.client.dto.model.user.UserRelationshipGroupOrBuilder> getUserRelationshipGroupsFieldBuilder() {
            if (userRelationshipGroupsBuilder_ == null) {
                userRelationshipGroupsBuilder_ = new com.google.protobuf.RepeatedFieldBuilder<>(
                        userRelationshipGroups_,
                        ((bitField0_ & 0x00000001) != 0),
                        getParentForChildren(),
                        isClean());
                userRelationshipGroups_ = null;
            }
            return userRelationshipGroupsBuilder_;
        }
<code>repeated .im.turms.proto.UserRelationshipGroup user_relationship_groups = 1;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/user/UserRelationshipGroupsWithVersion.java