code: def export_2d() -> None:
      node = onnx.helper.make_node(
          "Det",
          inputs=["x"],
          outputs=["y"],
      )
  
      x = np.arange(4).reshape(2, 2).astype(np.float32)
      y = np.linalg.det(x)  # expect -2
      expect(node, inputs=[x], outputs=[y], name="test_det_2d")
  
file_path: onnx/onnx/backend/test/case/node/det.py
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 Det obj's underlying member method code with example usage: obj.export_2d() without return types