def unpack_definitions(self, schema: core_schema.DefinitionsSchema) -> CoreSchema:
        """Store the definitions of the `'definitions'` core schema and return the inner core schema."""
        for def_schema in schema['definitions']:
            self._definitions[def_schema['ref']] = def_schema  # pyright: ignore
        return schema['schema']
Store the definitions of the `'definitions'` core schema and return the inner core schema.
pydantic/_internal/_generate_schema.py