/usr/share/doc/javacc/examples/Obfuscator/useids is in javacc-doc 5.0-7.
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 | // Obfuscated identifiers to use (preferably).
fileName
randomNumber
html
|