# request (curl notation, sent through MockMvc): curl -H 'HX-Request: true' -d 'name=&email=not-an-email&role=Developer' /contacts HTTP 422 ---- body (636 chars) ----
# request (curl notation, sent through MockMvc): curl -d 'name=&email=x@y.z&role=Tester' /contacts (no JavaScript, no HX header) HTTP 422 ---- body (1461 chars) ----