code: def testCheckFilesystemSupport_raiseError(self):
      with mock.patch.object(
          tf.io.gfile,
          "get_registered_schemes",
          autospec=True,
          return_value=["file", "ram"],
      ) as mock_get_registered_schemes:
          with mock.patch(
              "builtins.__import__",
              side_effect=self.fake_import(
                  _TENSORFLOW_IO_MODULE, success=False
              ),
          ) as mock_import:
              err_msg = (
                  "Error: Unsupported filename scheme 's3' (supported schemes: ['file', 'ram'])."
                  + " For additional filesystem support, consider installing TensorFlow I/O"
                  + " (https://www.tensorflow.org/io) via `pip install tensorflow-io`."
              )
              with self.assertRaisesWithLiteralMatch(
                  tf.errors.UnimplementedError, err_msg
              ):
                  data_ingester._check_filesystem_support(
                      ["tmp/demo", "s3://bucket/123"]
                  )
      self.assertEqual("tensorflow_io", mock_import.call_args[0][0])
      mock_get_registered_schemes.assert_called_once()
  
imports: import ntpath
  import os
  import posixpath
  import time
  from unittest import mock
  from tensorboard import test
  from tensorboard.backend.event_processing import data_ingester
  from tensorboard.compat import tf
label_desc: Use image node_id 5 for calling the FileSystemSupportTest obj's underlying member method code with example usage: obj.testCheckFilesystemSupport_raiseError() without return types