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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def get_absolute_path(cls, roots, path):
 """Returns the absolute location of ``path`` relative to one of the ``roots``. ``roots`` is the path configured for this `StaticFileHandler` (in most cases the ``static_path`` `Application` setting). """

        for root in roots:
            abspath = os.path.abspath(os.path.join(root, path))
            if abspath.startswith(root) and os.path.exists(abspath):
                return abspath
        # XXX TODO
        return 'file-not-found'