This file is indexed.

/usr/share/pam-configs/cgfs is in libpam-cgfs 2.0.0-0ubuntu2.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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Name: Create cgroups for user login sessions
Default: yes
Priority: 0
Session-Type: Additional
Session:
	optional	pam_cgfs.so -c freezer,memory,name=systemd