/etc/X11/Xsession.d/60xbrlapi is in xbrlapi 5.4-7+deb9u1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1
if [ -x /usr/bin/xbrlapi ]; then /usr/bin/xbrlapi -q 2> /dev/null & fi