code: def get_function_rank(self, f):
      rank = self.functions_ranks.get(f, -1)
      return rank
  
imports: import nnabla
  import nnabla.functions
  import numpy
  from collections import defaultdict
  from .graph_converter import FunctionModifier
  from .batch_normalization_folding import BatchNormalizationFoldingModifier
  from .batch_normalization_self_folding import BatchNormalizationSelfFoldingModifier
  from .remove_function import RemoveFunctionModifier
label_desc: Use image node_id 2 for calling the QuantizeNonQNNToRecordingModifier obj's underlying member method code with example usage: obj.get_function_rank(f) and returns: rank