Functions on pathauto.api.php documentation do not exist

The docblock in the pathauto.api.php file advises that we call the pathauto_create_alias() function, but no such function exists in the code. I would change the documentation to point to the new function, but I'll be damned if I can decipher how the code works anymore. Thanks to whomever can correct this!

Update:
Not only the pathauto_create_alias() dosen't exist but pathauto_path_delete_all() and hook_path_alias_types() also don't exists anywhere else on the code but on pathauto.api.php comments. They might have been replaced a long time ago but the documentation wasn't updated.