'Check if a blob exists on Azure Blob Storage.
:param container_name: Name of the container.
:type container_name: str
:param blob_name: Name of the blob.
:type blob_name: str
:param kwargs: Optional keyword arguments that
`BlockBlobService.exists()` takes.
:type kwargs: object
:return: True if the blob exists, False otherwise.
:rtype bool'

def check_for_blob(self, container_name, blob_name, **kwargs):

    return self.connection.exists(container_name, blob_name, **kwargs)
