private com.google.protobuf.SingleFieldBuilder<im.turms.server.common.access.client.dto.model.user.NearbyUsers, im.turms.server.common.access.client.dto.model.user.NearbyUsers.Builder, im.turms.server.common.access.client.dto.model.user.NearbyUsersOrBuilder> getNearbyUsersFieldBuilder() {
                if (nearbyUsersBuilder_ == null) {
                    if (!(kindCase_ == 14)) {
                        kind_ = im.turms.server.common.access.client.dto.model.user.NearbyUsers
                                .getDefaultInstance();
                    }
                    nearbyUsersBuilder_ = new com.google.protobuf.SingleFieldBuilder<>(
                            (im.turms.server.common.access.client.dto.model.user.NearbyUsers) kind_,
                            getParentForChildren(),
                            isClean());
                    kind_ = null;
                }
                kindCase_ = 14;
                onChanged();
                return nearbyUsersBuilder_;
            }
<code>.im.turms.proto.NearbyUsers nearby_users = 14;</code>
turms-server-common/src/main/java/im/turms/server/common/access/client/dto/notification/TurmsNotification.java