Undefined result for filemanager::shared_file() method.

<udata xmlns:xlink="http://www.w3.org/TR/xlink" module="filemanager" method="shared_file" generation-time="0.001555"> <id>123</id> <alt_name>k_ekologicheskomu_proektu_belochka_v_nashem_gorode</alt_name> <link> <download_link>/filemanager/download/123</download_link> <file_name>prezentaciya_belochka_v_nashem_gorode.pptx</file_name> <file_size>8883.91</file_size> </udata>