def METHOD_NAME(self, key):
    """Delete the value at a given key.
    Args:
          key: The key of the value to delete.
    """
    key = bytes_to_str(key)
    LOGGER.debug(f"Deleting azure blob at {self._container_name}/{key}")
    blob_client = self._blob_service_client.get_blob_client(
        container=self._container_name,
        blob=f'{self.base_path}{key}',
    )
    blob_client.delete_blob()