class_docstr: Compute if inputs contains zero value.
  
  Returns:
      bool tensor: True for values not equal to zero.
code: def compute_output_shape(self, input_shape):
      return input_shape
  
imports: import tensorflow.compat.v1.keras
  from tensorflow.compat.v1.linalg import einsum
  from tensorflow.compat.v1.keras import layers
  from tensorflow.compat.v1.keras import backend
label_desc: Use image node_id 3 for calling the ComputeMasking obj's underlying member method code with example usage: obj.compute_output_shape(input_shape) and returns: input_shape