additionalProperties with $ref errs

[reubano]

schema.json

{
  "$schema": "http://json-schema.org/draft-07/schema#",
  "$id": "https://raw.githubusercontent.com/nerevu/rorschach/master/app/schemas/provider.schema.json",
  "title": "Provider",
  "description": "A 3rd party API provider",
  "type": "object",
  "additionalProperties": false,
  "properties": {
    "authentication": {
      "description": "Authentication methods exposed by the API",
      "type": "object",
      "default": {},
      "additionalProperties": {
        "$ref": "https://raw.githubusercontent.com/nerevu/rorschach/master/app/schemas/auth.schema.json"
      }
    }
  },
  "required": [
    "authentication"
  ]
}

$ json_codegen --language python3 --output provider.py schema.json
Traceback (most recent call last):
  File "/Users/reubano/.virtualenvs/authorizer/bin/json_codegen", line 8, in <module>
    sys.exit(main())
  File "/Users/reubano/.virtualenvs/authorizer/lib/python3.9/site-packages/json_codegen/cli.py", line 68, in main
    code = generator(schema, prefix=args.prefix).generate().as_code()
  File "/Users/reubano/.virtualenvs/authorizer/lib/python3.9/site-packages/json_codegen/generators/python3.py", line 32, in generate
    self._body.append(self.make_klass(root_definition))
  File "/Users/reubano/.virtualenvs/authorizer/lib/python3.9/site-packages/json_codegen/generators/python3.py", line 58, in make_klass
    class_body.append(self.make_klass_constructor(properties, required))
  File "/Users/reubano/.virtualenvs/authorizer/lib/python3.9/site-packages/json_codegen/generators/python3.py", line 342, in make_klass_constructor
    annotation = self.get_annotation_from_definition(property_, is_required=is_required)
  File "/Users/reubano/.virtualenvs/authorizer/lib/python3.9/site-packages/json_codegen/generators/python3.py", line 309, in get_annotation_from_definition
    annotation = self.get_partial_annotation_from_definition(property_)
  File "/Users/reubano/.virtualenvs/authorizer/lib/python3.9/site-packages/json_codegen/generators/python3.py", line 268, in get_partial_annotation_from_definition
    object_name = self.definitions[property_["additionalProperties"]["$ref"]]["title"]
KeyError: 'https://raw.githubusercontent.com/nerevu/rorschach/master/app/schemas/auth.schema.json'

json-schema-codegen v0.4.5
python 3.9
macOS 12.0.1

[tanzim-bgl]

I am having the same issue with a reference to a local file. The generated code is empty just import statements. Any updates on this?