code: def testImportWithCall(self):
      @def_function.function
      def callee(i):
          return i
  
      @def_function.function
      def caller(i):
          return callee(i)
  
      concrete_function = caller.get_concrete_function(
          tensor_spec.TensorSpec(None, dtypes.float32)
      )
      mlir_module = mlir.convert_function(concrete_function)
      self.assertRegex(mlir_module, r"func @.*caller.*\(")
      self.assertRegex(mlir_module, r"func private @.*callee.*\(")
  
imports: import os
  from tensorflow.python.compiler.mlir import mlir
  from tensorflow.python.eager import def_function
  from tensorflow.python.framework import dtypes
  from tensorflow.python.framework import errors
  from tensorflow.python.framework import tensor_spec
  from tensorflow.python.framework import test_util
  from tensorflow.python.ops import logging_ops
  from tensorflow.python.ops import math_ops
  from tensorflow.python.platform import resource_loader
  from tensorflow.python.platform import test
  from tensorflow.python.pywrap_mlir import experimental_tflite_to_tosa_bytecode
  from tensorflow.python.pywrap_mlir import import_graphdef
label_desc: Use image node_id 2 for calling the MLIRConcreteFunctionImportTest obj's underlying member method code with example usage: obj.testImportWithCall() and returns: i, callee