code: def test_split_empty(self):
      os.environ["BIGTABLE_EMULATOR_HOST"] = self.emulator.get_addr()
      self.emulator.create_table(
          "fake_project",
          "fake_instance",
          "test-table",
          ["fam1", "fam2"],
      )
  
      client = BigtableClient("fake_project", "fake_instance")
  
      rs = row_set.from_rows_or_ranges(row_range.empty())
  
      num_parallel_calls = 2
  
      self.assertRaises(
          tf.errors.FailedPreconditionError,
          lambda: core_ops.bigtable_split_row_set_evenly(
              client._client_resource,
              rs._impl,
              "test-table",
              num_parallel_calls,
          ),
      )
  
file_path: io/tests/test_bigtable/test_parallel_read_rows.py
imports: import os
  from re import escape
  from .bigtable_emulator import BigtableEmulator
  from tensorflow_io.python.ops import core_ops
  from tensorflow_io.python.ops.bigtable.bigtable_dataset_ops import BigtableClient
  import tensorflow_io.python.ops.bigtable.bigtable_row_range
  import tensorflow_io.python.ops.bigtable.bigtable_row_set
  import tensorflow
  from tensorflow import test
  import pytest
  import sys
label_desc: Use image node_id 6 for calling the BigtableParallelReadTest obj's underlying member method code with example usage: obj.test_split_empty() without return types