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/d26627f0cbfe50985289bc4a6372229a17ca1ee2a5b5343e9c79528433b8a4e3-primary.sqlite.bz2