Confused delete_snapshots in delete_blob()

[Juliehzl]

I am confused by the delete_snapshots parameter. In function parameter list, it is in boolean and in description, it is string.
What is the right one?

azure-sdk-for-python/sdk/storage/azure-storage-blob/azure/storage/blob/_blob_client.py

Lines 981 to 999 in c9240aa

	def delete_blob(self, delete_snapshots=False, **kwargs):
	# type: (str, **Any) -> None
	"""Marks the specified blob for deletion.
	The blob is later deleted during garbage collection.
	Note that in order to delete a blob, you must delete all of its
	snapshots. You can delete both at the same time with the delete_blob()
	operation.
	If a delete retention policy is enabled for the service, then this operation soft deletes the blob
	and retains the blob for a specified number of days.
	After the specified number of days, the blob's data is removed from the service during garbage collection.
	Soft deleted blob is accessible through :func:`~ContainerClient.list_blobs()` specifying `include=['deleted']`
	option. Soft-deleted blob can be restored using :func:`undelete` operation.
	:param str delete_snapshots:
	Required if the blob has associated snapshots. Values include:
	- "only": Deletes only the blobs snapshots.
	- "include": Deletes the blob along with all snapshots.