@Test
public void usingClientFollow() throws Exception {
// given
final JsonRepresentation givenAction = Util.givenAction(client, "ActionsEntities", "concatenate");
final ObjectActionRepresentation actionRepr = givenAction.as(ObjectActionRepresentation.class);
final LinkRepresentation invokeLink = actionRepr.getInvoke();
final JsonRepresentation args =invokeLink.getArguments();
// when
args.mapPut("str1.value", "IVA VENDITE 21%");
args.mapPut("str2.value", "AAA");