code: def call(self, x):
      return (x, x + 1)
  
imports: import numpy
  from keras import backend
  from keras import testing
  from keras.backend.common import keras_tensor
  from keras.ops import numpy
  from keras.ops import operation
label_desc: Use image node_id 1 for calling the OpWithMultipleOutputs obj's underlying member method code with example usage: obj.call(x) and returns: x,  unknown