def METHOD_NAME(self, key):
    """Read the value stored at the given key.
    Args:
          key: The key for which to read the value.
    """
    key = bytes_to_str(key)
    LOGGER.debug("Getting Azure Block Blob %s/%s", self._container_name, key)
    blob_client = self._blob_service_client.get_blob_client(
        container=self._container_name,
        blob=f'{self.base_path}{key}',
    )
    try:
        return blob_client.download_blob().readall().decode()
    except ResourceNotFoundError:
        return None