code: def __init__(self):
      ind = btind.MovAv.SMA(self.data)
      self.p.inddata = [ind]
      super(TS2, self).__init__()
  
file_path: backtrader/tests/test_ind_envelope.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import testcommon
  import backtrader
  import backtrader.indicators
label_desc: Use image node_id 1 to create a new TS2 object from inherited base classes: testcommon with example: obj = TS2()