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This file is indexed.

/lib/systemd/system/ssh.socket is in openssh-server 1:6.6p1-2ubuntu2.13.

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

The actual contents of the file can be viewed below.

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[Unit]
Description=OpenBSD Secure Shell server socket
Before=ssh.service
Conflicts=ssh.service
ConditionPathExists=!/etc/ssh/sshd_not_to_be_run

[Socket]
ListenStream=22
Accept=yes

[Install]
WantedBy=sockets.target