code: def _eq_attr(self):
      return (self._break_period,)
  
imports: import matplotlib.pyplot
  import numpy
  import pandas
  from statsmodels.tsa.deterministic import DeterministicProcess
  from statsmodels.tsa.deterministic import Fourier, Seasonality, TimeTrend
  from statsmodels.tsa.deterministic import DeterministicTerm
  import numpy
  from statsmodels.tsa.api import AutoReg
  from statsmodels.tsa.api import SARIMAX
label_desc: Use image node_id 3 for calling the BrokenTimeTrend obj's underlying member method code with example usage: obj._eq_attr() and returns: self