xdg-desktop-portal works by exposing a series of D-Bus interfaces known as portals under a well-known name (org.freedesktop.portal.Desktop) and object path (/org/freedesktop/portal/desktop). The portal interfaces include APIs for file access, opening URIs, printing and others.
acquired package info from repodata DB: repodata/6bded347e614bd7bc6bfff5f4af69641e4056c5d4e8a7fa27e60a938e3a13b9b-primary.sqlite.bz2