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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_snapshot(self, snapshot_id_or_uri, volume_id_or_uri=None):
 """ Gets a snapshot of a volume. Args: volume_id_or_uri: Can be either the volume ID or the volume URI. It is optional if it is passed a snapshot URI, but required if it passed a snapshot ID. snapshot_id_or_uri: Can be either the snapshot ID or the snapshot URI. Returns: dict: The snapshot. """

        uri = self.__build_volume_snapshot_uri(volume_id_or_uri, snapshot_id_or_uri)
        return self._client.get(uri)