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  1. or download this
    
    in file FOO/Bar/Baz.pm
    ...
        # something interesting
    }
    
  2. or download this
    
    --- in the new module FOO/Bar.pm
    ...
    --- in the script
    (remove the login function and proceed as normal)
    
  3. or download this
    
    --- in FOO/Bar/Baz.pm
    ...
    
    FOO::Bar->set_callback('login', \&login);