code: def test_change_markers_routes(self):
      layer = Directions(self.start, self.end)
      layer.show_markers = False
      assert not layer.get_state()["show_markers"]
      layer.show_route = False
      assert not layer.get_state()["show_route"]
  
imports: import unittest
  import pytest
  import traitlets
  from ..directions import Directions, DEFAULT_STROKE_COLOR
label_desc: Use image node_id 12 for calling the DirectionsLayer obj's underlying member method code with example usage: obj.test_change_markers_routes() without return types