code: def test_drawdown(self):
      result = pandas_ta.drawdown(self.pctret)
      self.assertIsInstance(result, DataFrame)
      self.assertEqual(result.name, "DD")
  
      result = pandas_ta.drawdown(self.logret)
      self.assertIsInstance(result, DataFrame)
      self.assertEqual(result.name, "DD")
  
imports: from unittest import skip, TestCase
  from pandas import DataFrame
  from .config import sample_data
  from .context import pandas_ta
label_desc: Use image node_id 8 for calling the TestUtilityMetrics obj's underlying member method code with example usage: obj.test_drawdown() without return types