code: def export() -> None:
      node = onnx.helper.make_node(
          "MatMulInteger",
          inputs=["A", "B", "a_zero_point", "b_zero_point"],
          outputs=["Y"],
      )
  
      A = np.array(
          [
              [11, 7, 3],
              [10, 6, 2],
              [9, 5, 1],
              [8, 4, 0],
          ],
          dtype=np.uint8,
      )
  
      a_zero_point = np.array([12], dtype=np.uint8)
  
      B = np.array(
          [
              [1, 4],
              [2, 5],
              [3, 6],
          ],
          dtype=np.uint8,
      )
  
      b_zero_point = np.array([0], dtype=np.uint8)
  
      output = np.array(
          [
              [-38, -83],
              [-44, -98],
              [-50, -113],
              [-56, -128],
          ],
          dtype=np.int32,
      )
  
      expect(
          node,
          inputs=[A, B, a_zero_point, b_zero_point],
          outputs=[output],
          name="test_matmulinteger",
      )
  
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 MatMulInteger obj's underlying member method code with example usage: obj.export() without return types