public Builder addGroups(im.turms.server.common.access.client.dto.model.group.Group value) {
            if (groupsBuilder_ == null) {
                if (value == null) {
                    throw new NullPointerException();
                }
                ensureGroupsIsMutable();
                groups_.add(value);
                onChanged();
            } else {
                groupsBuilder_.addMessage(value);
            }
            return this;
        }
<code>repeated .im.turms.proto.Group groups = 1;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/model/group/GroupsWithVersion.java