if (node && node->children && node->children->content) {
if (model->u.element->fixed && strcmp(model->u.element->fixed, (char*)node->children->content) != 0) {
soap_error3(E_ERROR, "Encoding: Element '%s' has fixed value '%s' (value '%s' is not allowed)", model->u.element->name, model->u.element->fixed, node->children->content);