This looks like an unimplemented stub. If the function were to delete a file, it would call unlink to do so.

I would expect this to print

default.Saw
testtest
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If the function is to return the file name, it should end with the $title variable (which ought to be declared my). As it is, it returns the value returned by sleep, 2 in this case.

# . . .
    sleep 2;
    $title;
}
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