input: def most_efficient_order(tasks: List[Task]) -> List[Task]:
      """
      This method takes a list of tasks and produces the most efficient order for completing the tasks.
  
      Parameters
      ----------
      tasks: List[Task]
          A list of tasks to be performed.
  
      Returns
      -------
      List[Task]
          An ordered list of tasks representing the most efficient order for completing the tasks.
  
      Example:
      >>> tasks = [Task(10), Task(5), Task(15), Task(20)]
      >>> most_efficient_order(tasks)
      [Task(5), Task(10), Task(15), Task(20)]
      """
output:     tasks.sort()
      return tasks