OpenAPI request always generates random data, even if a body is specified

[ueberfuhr]

Citrus Version
4.2.1

Expected behavior
When I specify a body for the request, this should be sent to the server, independent from being valid in comparison to the OpenAPI schema.

Actual behavior
Random data is sent to the server.

Test case sample

        t.when(
                openapi()
                        .specification(apiSpecification)
                        .client(openApiClient)
                        .send("createTodo") // operationId
                        .message()
                        .body("{\"title\": \"test\"}")
        );