code: def test_csv_use_escape_char(self):
      schema, lines = _create_csv_set_escape_char_schema_and_lines()
      self._build_csv_job(schema, lines)
      self.env.execute("test_csv_use_escape_char")
      _check_csv_set_escape_char_results(
          self, self.test_sink.get_results(True, False)
      )
  
imports: import glob
  import os
  import tempfile
  from typing import Tuple, List
  from pyflink.common import WatermarkStrategy, Types
  from pyflink.datastream import MapFunction
  from pyflink.datastream.connectors.file_system import FileSource, FileSink
  from pyflink.datastream.formats.csv import CsvSchema, CsvReaderFormat, CsvBulkWriters, CsvRowSerializationSchema, CsvRowDeserializationSchema
  from pyflink.datastream.tests.test_util import DataStreamTestSinkFunction
  from pyflink.java_gateway import get_gateway
  from pyflink.table import DataTypes
  from pyflink.testing.test_case_utils import PyFlinkStreamingTestCase, PyFlinkTestCase
  from pyflink.util.java_utils import get_j_env_configuration
label_desc: Use image node_id 10 for calling the FileSourceCsvReaderFormatTests obj's underlying member method code with example usage: obj.test_csv_use_escape_char() without return types