Uploading JSONSchema with $ref fails

[tegx]

When I upload a schema with a property using $ref, I get the error java.io.FileNotFoundException: http://example.org/abc.
I would expect that the validator does not resolve this URL and only checks if the schema is valid against the metaschema.

Example:

{
    "$schema": "https://json-schema.org/draft/2019-09/schema",
    "$id": "http://example.org/idontcare",
    "title": "Doesntmatter",
    "type": "object",
    "properties": {
        "abc": {
            "$ref": "http://example.org/abc"
        }
    }
}

Hint: I think the problem is that in JsonUtils::validateJsonSchemaDocument the same validation method is used as validating a document against a schema which requires resolving the URL.

[VolkerHartmann]

Not sure how to handle this.