/lib/udev/keymaps/acer-aspire_5920g 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.
1 2 3 4 5 | 0x8A media
0x92 media
0xA6 setup
0xB2 www
0xD9 bluetooth # (toggle) on-to-off
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