in etl/glean_etl.py [0:0]
def _get_annotation(annotations_index, origin, item_type, identifier=None):
if item_type == "app":
return annotations_index.get(origin, {})
if not identifier:
raise Exception("Identifier required for non-app item types")
return annotations_index.get(origin, {}).get(item_type, {}).get(identifier, {})