code: def test_creating_table_that_exists(self, mock_hook):
      op = BigtableCreateTableOperator(
          project_id=PROJECT_ID,
          instance_id=INSTANCE_ID,
          table_id=TABLE_ID,
          initial_split_keys=INITIAL_SPLIT_KEYS,
          column_families=EMPTY_COLUMN_FAMILIES,
          task_id="id",
          gcp_conn_id=GCP_CONN_ID,
          impersonation_chain=IMPERSONATION_CHAIN,
      )
  
      mock_hook.return_value.get_column_families_for_table.return_value = (
          EMPTY_COLUMN_FAMILIES
      )
      instance = (
          mock_hook.return_value.get_instance.return_value
      ) = mock.Mock(Instance)
      mock_hook.return_value.create_table.side_effect = mock.Mock(
          side_effect=google.api_core.exceptions.AlreadyExists(
              "Table already exists."
          )
      )
      op.execute(None)
  
      mock_hook.assert_called_once_with(
          gcp_conn_id=GCP_CONN_ID,
          impersonation_chain=IMPERSONATION_CHAIN,
      )
      mock_hook.return_value.create_table.assert_called_once_with(
          instance=instance,
          table_id=TABLE_ID,
          initial_split_keys=INITIAL_SPLIT_KEYS,
          column_families=EMPTY_COLUMN_FAMILIES,
      )
  
imports: from __future__ import annotations
  from unittest import mock
  import google.api_core.exceptions
  import pytest
  from google.cloud.bigtable import enums
  from google.cloud.bigtable.column_family import MaxVersionsGCRule
  from google.cloud.bigtable.instance import Instance
  from airflow.exceptions import AirflowException
  from airflow.providers.google.cloud.operators.bigtable import BigtableCreateInstanceOperator, BigtableCreateTableOperator, BigtableDeleteInstanceOperator, BigtableDeleteTableOperator, BigtableUpdateClusterOperator, BigtableUpdateInstanceOperator
label_desc: Use image node_id 4 for calling the TestBigtableTableCreate obj's underlying member method code with example usage: obj.test_creating_table_that_exists(mock_hook) without return types