class_docstr: Collect all tasks into a single result.csv file
class_docstr_tok: ["Collect","all","tasks","into","a","single","result.csv","file"]
code: def complete(self):
      return False
  
imports: import json
  from time import time
  import b2luigi
  import numpy
  import pandas
  from tsfresh.feature_extraction import ComprehensiveFCParameters, MinimalFCParameters, extract_features
label_desc: Use image node_id 1 for calling the CombinerTask obj's underlying member method code with example usage: obj.complete() and returns: False