Undefined result for filemanager::shared_file() method.

<udata xmlns:xlink="http://www.w3.org/TR/xlink" module="filemanager" method="shared_file" generation-time="0.000891"> <id>748</id> <alt_name>polozhenie_o_volonterskoj_deyatelnosti_ogbpou_kpk</alt_name> <link> <download_link>/filemanager/download/748</download_link> <file_name>polozhenie_o_volonterskoj_deyatel_nosti_ogbpou_kpk.doc</file_name> <file_size>57</file_size> </udata>