code: def export() -> None:
      node = onnx.helper.make_node(
          "Not",
          inputs=["x"],
          outputs=["not"],
      )
  
      # 2d
      x = (np.random.randn(3, 4) > 0).astype(bool)
      expect(
          node,
          inputs=[x],
          outputs=[np.logical_not(x)],
          name="test_not_2d",
      )
  
      # 3d
      x = (np.random.randn(3, 4, 5) > 0).astype(bool)
      expect(
          node,
          inputs=[x],
          outputs=[np.logical_not(x)],
          name="test_not_3d",
      )
  
      # 4d
      x = (np.random.randn(3, 4, 5, 6) > 0).astype(bool)
      expect(
          node,
          inputs=[x],
          outputs=[np.logical_not(x)],
          name="test_not_4d",
      )
  
imports: import numpy
  import onnx
  from onnx.backend.test.case.base import Base
  from onnx.backend.test.case.node import expect
label_desc: Use image node_id 1 for calling the Not obj's underlying member method code with example usage: obj.export() without return types