This file is indexed.

/etc/X11/Xsession.d/80_ltsp-sound is in ltsp-server 5.3.7-0ubuntu2.

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

The actual contents of the file can be viewed below.

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if [ -x /usr/bin/asoundconf ]; then
    if [ -n "$LTSP_CLIENT" ]; then
            /usr/bin/asoundconf set-pulseaudio
    else
        if [ ! type pulseaudio > /dev/null 2>&1 ]; then
                /usr/bin/asoundconf unset-pulseaudio
        fi
    fi
fi