Error in download module tutorial from github.

sorry for my English.

i download “ee-tuts-download-module” but it’s not work with “ExpressionEngine_Core2.6.1”.

in line 519 and i know it’s deprecated but i don’t know how i fix it.

$upload_directories = $this->EE->File_upload_preferences_model->get_file_upload_preferences($this->EE->session->userdata('member_group'));

Best regards.