code: def setUp(self):
      self.left = -0.1
      self.bottom = -0.2
      self.right = 0.3
      self.top = 0.4
      self.lbrt = (self.left, self.bottom, self.right, self.top)
  
      self.region = BoundingBox(
          points=((self.left, self.bottom), (self.right, self.top))
      )
      self.xc, self.yc = self.region.aarect().centroid()
  
imports: import unittest
  from holoviews.core import AARectangle, BoundingBox
label_desc: Use image node_id 1 for calling the TestBoundingBox obj's underlying member method code with example usage: obj.setUp() without return types