code: def call(self, prevprev, prev):
      return self.reduce0(prevprev), self.reduce1(prev)
  
imports: import tensorflow
  from tensorflow.keras import Model, Sequential
  from tensorflow.keras.layers import AveragePooling2D, BatchNormalization, Conv2D, Dense, Dropout, GlobalAveragePooling2D, MaxPool2D, ReLU, SeparableConv2D
  from nni.nas.tensorflow.mutables import InputChoice, LayerChoice, MutableScope
label_desc: Use image node_id 2 for calling the ReductionLayer obj's underlying member method code with example usage: obj.call(prevprev, prev) and returns: self,  self