/usr/share/vim/addons/plugin/snipMateInterface.vim is in vim-snipmate 0.87-3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 | " some useful commands
command! SnipMateOpenSnippetFiles call snipMate#OpenSnippetFiles()
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