BUG: newJsonBody() builder unable to handle certain field names

[RogVanGDS]

I'm using the newJsonBody builder for the LambdaDsl tests in Java - Junit5

The JsonBody I am trying to mock has a field that has a hyperlink as it's fieldName, but as soon as I add a fieldName into the builder that contains a . or a / character, it turns the fieldName into a JsonList of that string, instead of just leaving it as a plain old String.

This is the goal of my mocked response:

This is the code I am currently using:

withContent(
      newJsonBody(
                (body) -> {
                    final PactDslJsonBody actualPactDsl =
                            new PactDslJsonBody();

                    var jwtHelper =
                            new JwtTestHelper(
                                    VALID_VC_HEADER,
                                    VALID_VC_BODY,
                                    VALID_VC_SIGNATURE);

                    body.nullValue("error");
                    body.stringValue("iss", "f2f");
                    body.stringValue("sub", "test-subject");
                    body.stringType(
                            "state",
                            "f5f0d4d1-b937-4abe-b379-8269f600ad44");
                    body.minArrayLike(
                            "https://vocab.account.gov.uk/v1/credentialJWT",
                            1,
                            PactDslJsonRootValue.stringMatcher(
                                    jwtHelper
                                            .buildRegexMatcherIgnoringSignature(),
                                    jwtHelper.buildJwt()),
                            1);
                    actualPactDsl.close();

                    body.nullValue("error_description");
                })
        .build())

This code produces the following JSON: