class_docstr: Main Classifier object, used to classify things into similar sets.
docstr: Add a a list of sets to the classifier.  Any iterable of iterables is accepted.
code: def update(self, list_of_sets):
      """
      Add a a list of sets to the classifier.  Any iterable of iterables is accepted.
      """
      for s in list_of_sets:
          self.add(s)
  
file_path: catboost/contrib/python/fonttools/fontTools/misc/classifyTools.py
label_desc: Use image node_id 3 for calling the Classifier obj's underlying member method code with example usage: obj.update(list_of_sets) without return types