input: 
  def add_numbers(a: int, b: int) -> None:
      """Adds two numbers and prints the result.
      >>> add_numbers(5, 7)
      12
      >>> add_numbers(10, 20)
      30
      """
      sum_result = a + b
      print(sum_result)
  
output:     sum_result = a + b
      print(sum_result)