code: def export_hardsigmoid_default() -> None:
      default_alpha = 0.2
      default_beta = 0.5
      node = onnx.helper.make_node(
          "HardSigmoid",
          inputs=["x"],
          outputs=["y"],
      )
      x = np.random.randn(3, 4, 5).astype(np.float32)
      y = np.clip(x * default_alpha + default_beta, 0, 1)
      expect(
          node, inputs=[x], outputs=[y], name="test_hardsigmoid_default"
      )
  
file_path: onnx/onnx/backend/test/case/node/hardsigmoid.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 2 for calling the HardSigmoid obj's underlying member method code with example usage: obj.export_hardsigmoid_default() without return types