code: def test_gemm_ios13(self):
      self.test_gemm(minimum_ios_deployment_target="13")
  
imports: from __future__ import absolute_import
  from __future__ import division
  from __future__ import print_function
  from __future__ import unicode_literals
  import unittest
  import numpy
  from coremltools._deps import _HAS_ONNX, MSG_ONNX_NOT_FOUND
  from typing import Text
  from coremltools.models.utils import _macos_version
label_desc: Use image node_id 8 for calling the SingleOperatorTest obj's underlying member method code with example usage: obj.test_gemm_ios13() without return types