code: def create(model, trust_region, entropy_coefficient, q_coefficient, max_grad_norm, discount_factor,
             rho_cap=10.0, retrace_rho_cap=1.0, average_model_alpha=0.99, trust_region_delta=1.0):
      
      return AcerPolicyGradient(
          trust_region=trust_region,
          model_factory=model,
          entropy_coefficient=entropy_coefficient,
          q_coefficient=q_coefficient,
          rho_cap=rho_cap,
          retrace_rho_cap=retrace_rho_cap,
          max_grad_norm=max_grad_norm,
          discount_factor=discount_factor,
          average_model_alpha=average_model_alpha,
          trust_region_delta=trust_region_delta
      )
docs: Vel factory function