code: def test_box_hash(self):
      box1 = box_utils.CoordinateBox((0, 1), (0, 1), (0, 1))
      box2 = box_utils.CoordinateBox((0, 2), (0, 2), (0, 2))
      mapping = {}
      mapping[box1] = 1
      mapping[box2] = 2
      assert len(mapping) == 2
  
file_path: deepchem/deepchem/utils/test/test_coordinate_box_utils.py
imports: import numpy
  import unittest
  from deepchem.utils import coordinate_box_utils
label_desc: Use image node_id 7 for calling the TestCoordinateBoxUtils obj's underlying member method code with example usage: obj.test_box_hash() without return types