(I saw some other discussions that seem tangentially related to this but regarding OpenAPI)

Looking at the tests aroundJSON_API_FORMAT_FIELD_NAMES, the test cases are:

@pytest.mark.parametrize(    "format_type,output",    [        (False, {"full_name": {"last_name": "a", "first_name": "b"}}),        ("camelize", {"fullName": {"lastName": "a", "firstName": "b"}}),        ("capitalize", {"FullName": {"LastName": "a", "FirstName": "b"}}),        ("dasherize", {"full-name": {"last-name": "a", "first-name": "b"}}),        ("underscore", {"full_name": {"last_name": "a", "first_name": "b"}}),    ],)

With the subobject included in the test but not formatted, it looks to me like it's a conscious choice not to format subobject field names in the same way. May I ask why that is?

[edit]test_parse_preserves_json_value_field_names has given me a hint - wouldn't want totaint any third-party objects being included. Do you think some configuration flexibility might be possible here? e.g.JSON_API_FORMAT_FIELD_NAMES_RECURSIVE or something?