code: def test_squeeze_ext(self):
      self.data.ta.squeeze(append=True)
      self.assertIsInstance(self.data, DataFrame)
      self.assertEqual(
          list(self.data.columns[-4:]),
          ["SQZ_20_2.0_20_1.5", "SQZ_ON", "SQZ_OFF", "SQZ_NO"],
      )
  
      self.data.ta.squeeze(tr=False, append=True)
      self.assertIsInstance(self.data, DataFrame)
      self.assertEqual(
          list(self.data.columns[-4:]),
          ["SQZ_ON", "SQZ_OFF", "SQZ_NO", "SQZhlr_20_2.0_20_1.5"],
      )
  
imports: from .config import sample_data
  from .context import pandas_ta
  from unittest import skip, TestCase
  from pandas import DataFrame
label_desc: Use image node_id 37 for calling the TestMomentumExtension obj's underlying member method code with example usage: obj.test_squeeze_ext() without return types