validateAttributeExpression method
Validates that a given CEL expression conforms to IAP restrictions.
Request parameters:
name - Required. The resource name of the IAP protected resource.
Value must have pattern ^.*$.
expression - Required. User input string expression. Should be of the
form attributes.saml_attributes.filter(attribute, attribute.name in ['{attribute_name}', '{attribute_name}'])
$fields - Selector specifying which fields to include in a partial
response.
Completes with a ValidateIapAttributeExpressionResponse.
Completes with a commons.ApiRequestError if the API endpoint returned an error.
If the used http.Client completes with an error when making a REST call,
this method will complete with the same error.
Implementation
async.Future<ValidateIapAttributeExpressionResponse>
    validateAttributeExpression(
  core.String name, {
  core.String? expression,
  core.String? $fields,
}) async {
  final queryParams_ = <core.String, core.List<core.String>>{
    if (expression != null) 'expression': [expression],
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'v1/' + core.Uri.encodeFull('$name') + ':validateAttributeExpression';
  final response_ = await _requester.request(
    url_,
    'POST',
    queryParams: queryParams_,
  );
  return ValidateIapAttributeExpressionResponse.fromJson(
      response_ as core.Map<core.String, core.dynamic>);
}