code: def test_cdl_doji_ext(self):
      self.data.ta.cdl_pattern("doji", append=True)
      self.assertIsInstance(self.data, DataFrame)
      self.assertEqual(self.data.columns[-1], "CDL_DOJI_10_0.1")
  
file_path: pandas-ta/tests/test_ext_indicator_candle.py
imports: from .config import sample_data
  from .context import pandas_ta
  from unittest import TestCase, skip
  from pandas import DataFrame
label_desc: Use image node_id 5 for calling the TestCandleExtension obj's underlying member method code with example usage: obj.test_cdl_doji_ext() without return types