in scripts/validate.py [0:0]
def __init__(self, schema):
super().__init__(base_uri=None, referrer=None)
if "$id" in schema:
self.store[schema["$id"]] = schema
if "$defs" in schema:
for dfn in schema["$defs"].values():
if "$id" in dfn:
self.store[dfn["$id"]] = dfn