class_docstr: GraphConverter
  
  Convert a graph with the modifiers by traversing from output variables.
class_docstr_tok: ["GraphConverter","Convert","a","graph","with","the","modifiers","by","traversing","from","output","variables","."]
code: def __init__(self, modifiers=[]):
      self._modifiers = self._prepare_modifiers(modifiers)
  
imports: from collections import defaultdict
  import nnabla
  import nnabla.functions
label_desc: Use image node_id 1 to create a new GraphConverter object from inherited base classes: object with example: obj = GraphConverter(modifiers)