listRoles method
Lists every predefined google.iam.admin.v1.Role that IAM supports, or every custom role
that is defined for an organization or project.
Implementation
$grpc.ResponseFuture<$0.ListRolesResponse> listRoles(
$0.ListRolesRequest request, {
$grpc.CallOptions? options,
}) {
return $createUnaryCall(_$listRoles, request, options: options);
}