code: def get_role(resource_root, service_name, name, cluster_name="default"):
    
    return _get_role(resource_root, _get_role_path(cluster_name, service_name, name))
docs: Lookup a role by name
    @param resource_root: The root Resource object.
    @param service_name: Service name
    @param name: Role name
    @param cluster_name: Cluster name
    @return: An ApiRole object