/usr/share/vim/vim80/keymap/sinhala.vim is in vim-runtime 2:8.0.1453-1ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 | " Vim Keymap file for Sinhala (Sri Lanka)
"
source <sfile>:p:h/sinhala-phonetic_utf-8.vim
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