testIamPermissions method
      
Future<TestPermissionsResponse> 
testIamPermissions(
    
- TestPermissionsRequest request,
- String resource, {
- String? $fields,
Returns permissions that a caller has on the specified resource.
request - The metadata request object.
Request parameters:
resource - Name or id of the resource for this request.
Value must have pattern (firewallPolicies/)?\[0-9\]{0,20}.
$fields - Selector specifying which fields to include in a partial
response.
Completes with a TestPermissionsResponse.
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<TestPermissionsResponse> testIamPermissions(
  TestPermissionsRequest request,
  core.String resource, {
  core.String? $fields,
}) async {
  final body_ = convert.json.encode(request);
  final queryParams_ = <core.String, core.List<core.String>>{
    if ($fields != null) 'fields': [$fields],
  };
  final url_ =
      'locations/global/firewallPolicies/' +
      commons.escapeVariable('$resource') +
      '/testIamPermissions';
  final response_ = await _requester.request(
    url_,
    'POST',
    body: body_,
    queryParams: queryParams_,
  );
  return TestPermissionsResponse.fromJson(
    response_ as core.Map<core.String, core.dynamic>,
  );
}