code: def relu6(x):
      """Relu6 activation function.
  
      It's the ReLU function, but truncated to a maximum value of 6.
  
      Args:
          x: Input tensor.
      """
      return ops.relu6(x)
  
imports: from keras import backend
  from keras import ops
  from keras.api_export import keras_export
label_desc: Use image node_id 3 for calling a global function with example usage: relu6(x) and returns: ops