Values:
STATE_UNSPECIFIED (0):
Default value. This value is unused.
ACTIVE (1):
The subscription can actively send messages
to Cloud Storage.
PERMISSION_DENIED (2):
Cannot write to the Cloud Storage bucket
because of permission denied errors.
NOT_FOUND (3):
Cannot write to the Cloud Storage bucket
because it does not exist.
IN_TRANSIT_LOCATION_RESTRICTION (4):
Cannot write to the destination because enforce_in_transit
is set to true and the destination locations are not in the
allowed regions.
