docstr: Test use of functions.
docstr_tok: ["Test","use","of","functions","."]
code: def test_mi_function(self):
      """Test use of functions."""
      model = """
              <
                  ir_version: 7,
                  opset_import: [ "" : 17, "local" : 1]
              >
              agraph (float[N] x) => (y)
              {
                  y = local.cast(x)
              }
              <
                  opset_import: [ "" : 17 ],
                  domain: "local"
              >
              cast (x) => (y)
              {
                  y = Cast<to=6> (x)
              }
          """
      self._check(model, onnx.TensorProto.INT32)
  
file_path: onnx/onnx/test/model_inference_test.py
imports: import typing
  import unittest
  import onnx
  import onnx.parser
  import onnx.shape_inference
label_desc: Use image node_id 5 for calling the TestModelInference obj's underlying member method code with example usage: obj.test_mi_function() without return types