code: def setUp(self):
      super(PyFlinkEmbeddedThreadTests, self).setUp()
      self.t_env.get_config().set("python.execution-mode", "thread")
  
imports: import unittest
  from pyflink.table import DataTypes
  from pyflink.table.udf import TableFunction, udtf, ScalarFunction, udf
  from pyflink.table.expressions import col
  from pyflink.testing import source_sink_utils
  from pyflink.testing.test_case_utils import PyFlinkStreamTableTestCase, PyFlinkBatchTableTestCase
label_desc: Use image node_id 1 for calling the PyFlinkEmbeddedThreadTests obj's underlying member method code with example usage: obj.setUp() without return types