docstr: Tests the basic flow of `tf.mlir.experimental.convert_graph_def`.
docstr_tok: ["Tests","the","basic","flow","of","`","tf.mlir.experimental.convert_graph_def","`","."]
code: def testImport(self):
      """Tests the basic flow of `tf.mlir.experimental.convert_graph_def`."""
      mlir_module = mlir.convert_graph_def("")
      # An empty graph should contain at least an empty main function.
      self.assertIn("func @main", mlir_module)
  
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 1 for calling the MLIRGraphDefImportTest obj's underlying member method code with example usage: obj.testImport() without return types