private void ensureNearbyUsersIsMutable() {
        com.google.protobuf.Internal.ProtobufList<im.turms.client.model.proto.model.user.NearbyUser> tmp =
                nearbyUsers_;
        if (!tmp.isModifiable()) {
            nearbyUsers_ = com.google.protobuf.GeneratedMessageLite.mutableCopy(tmp);
        }
    }
<code>repeated .im.turms.proto.NearbyUser nearby_users = 1;</code>
turms-client-kotlin/src/main/java/im/turms/client/model/proto/model/user/NearbyUsers.java