Args:
            layers ([str]): A top-down list of of layer guids
            iden (str): The view iden ( defaults to default view ).

async def setViewLayers(self, layers, iden=None):
        '''
        Args:
            layers ([str]): A top-down list of of layer guids
            iden (str): The view iden ( defaults to default view ).
        '''
        if iden is None:
            iden = self.iden

        view = self.views.get(iden)
        if view is None:
            raise s_exc.NoSuchView(iden=iden)

        view.setLayers(layers)