docs: function linkForNonInput() {
  
                  scope.$watch(info.getValErrs, valErrsChanged);
  
                  // update the message in the z_invalid and z_error properties in the scope
                  // when a validation error changes on a non-input control
                  function valErrsChanged(newValue) {
                      var errorMsg = newValue ? newValue : "";
                      scope.z_error = errorMsg;
                      scope.z_invalid = !!errorMsg;
                      scope.z_required = info.getIsRequired();
                  }
              }