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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(self, thumbnail_name):
 """ Wrapper for ``_get``, which converts the thumbnail_name to String if necessary before calling ``_get`` :rtype: Thumbnail """

        if isinstance(thumbnail_name, list):
            thumbnail_name = '/'.join(thumbnail_name)
        return self._get(thumbnail_name)