code: def __init__(self):
      mid = (self.data.high + self.data.low) / 2.0
      bt.ind.LaguerreRSI(mid)
      bt.ind.LaguerreRSI3(mid)
      bt.ind.LaguerreRSI2(mid)
      pass
  
file_path: backtrader/samples/lrsi/lrsi-test.py
imports: from __future__ import absolute_import, division, print_function, unicode_literals
  import argparse
  import datetime
  import backtrader
label_desc: Use image node_id 1 to create a new St object from inherited base classes: bt with example: obj = St()