JsonRepresentation collValue = childrenRepr.getValue();
final int numChildren = collValue.size();
assertThat(numChildren, is(IsisMatchers.greaterThan(0)));
final LinkRepresentation firstChildRepr = collValue.arrayIterator(LinkRepresentation.class).next();
// when
final RestfulResponse<ObjectActionRepresentation> removeChildRestfulResponse =
RestfulResponse.ofT(objectResource.actionPrompt("PRNT", "53", "removeChild"));
final ObjectActionRepresentation removeChildRepr = removeChildRestfulResponse.getEntity();