code: def test_left_boundary(self):
      self.assertTrue(self.region.contains(self.left, self.yc))
  
imports: import unittest
  from holoviews.core import AARectangle, BoundingBox
label_desc: Use image node_id 9 for calling the TestBoundingBox obj's underlying member method code with example usage: obj.test_left_boundary() without return types