code: def create(backbone: ModelFactory, input_block: typing.Optional[ModelFactory]=None, initial_std_dev=0.4,
             factorized_noise=True):
      
      if input_block is None:
          input_block = IdentityFactory()
  
      return NoisyQModelFactory(
          input_block=input_block, backbone=backbone, initial_std_dev=initial_std_dev, factorized_noise=factorized_noise
      )
docs: Vel factory function