code: def compute_output_spec(self, x, y, z=None):
      return keras_tensor.KerasTensor(x.shape, x.dtype)
  
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 2 for calling the OpWithMultipleInputs obj's underlying member method code with example usage: obj.compute_output_spec(x, y, z) and returns: keras_tensor