class_docstr: A class for generating synthetic time series by composing
  other TimeSeriesGenerator's.
class_docstr_tok: ["A","class","for","generating","synthetic","time","series","by","composing","other","TimeSeriesGenerator","'s","."]
code: def generators(self):
      return self._generators
  
imports: import numpy
  import pandas
  from operator import add
  from functools import reduce
  from typing import Callable, List, Union
  from merlion.utils.time_series import UnivariateTimeSeries, TimeSeries
label_desc: Use image node_id 2 for calling the GeneratorComposer obj's underlying member method code with example usage: obj.generators() and returns: self