class_docstr: Warning used to notify that a large number of models will be trained and the
  the process may take a while to run.
class_docstr_tok: ["Warning","used","to","notify","that","a","large","number","of","models","will","be","trained","and","the","the","process","may","take","a","while","to","run","."]
code: def __str__(self):
      extra_message = (
          "\n You can suppress this warning using: "
          "warnings.simplefilter('ignore', category=LongTrainingWarning)"
      )
      return self.message + " " + extra_message
  
label_desc: Use image node_id 2 for calling the LongTrainingWarning obj's underlying member method code with example usage: obj.__str__() and returns: unknown