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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 _verify_part_size(self):
 """ Verifies that the part size is smaller then the maximum part size which is 5GB. """

        if self._part_size > PartSize.MAXIMUM_UPLOAD_SIZE:
            self._status = TransferState.FAILED
            raise SbgError('Part size = {}b. Maximum part size is {}b'.format(
                self._part_size, PartSize.MAXIMUM_UPLOAD_SIZE)
            )