This file is indexed.

/lib/udev/keymaps/module-sony is in udev 175-0ubuntu9.

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

The actual contents of the file can be viewed below.

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0x06 mute # Fn+F2
0x07 volumedown # Fn+F3
0x08 volumeup # Fn+F4
0x09 brightnessdown # Fn+F5
0x0A brightnessup # Fn+F6
0x0B switchvideomode # Fn+F7
0x0E zoom # Fn+F10
0x10 suspend # Fn+F12