def METHOD_NAME(self, label, mesh):
    """
    Slot for the mesh generated signal from the MeshGenerator
    """
    assert current_thread().name == "MainThread"
    if label == 0 and mesh is None:
        self._overview_scene.set_busy(False)
    else:
        mesh.setColor(self._cmap[self._mapping[label]] + (1,))
        mesh.setShader("toon")
        self._overview_scene.add_object(label, mesh)