code: def test_unrecognized_data_type(self):
      x = "unsupported_data"
      with self.assertRaisesRegex(ValueError, "Unrecognized data type"):
          _ = epoch_iterator.EpochIterator(x=x)
  
imports: import numpy
  import pytest
  import tensorflow
  from keras import backend
  from keras import testing
  from keras.trainers import data_adapters
  from keras.trainers import epoch_iterator
label_desc: Use image node_id 11 for calling the TestEpochIterator obj's underlying member method code with example usage: obj.test_unrecognized_data_type() without return types