input: Write a function to sort the given list in descending order using Python's built-in sort method. If the input list is empty, the function should return the empty list without any modification.
  
  assert sort_descending([3, 7, 5, 8, 10]) == [10, 8, 7, 5, 3]
  assert sort_descending([]) == []
  assert sort_descending([1, 2, 3]) == [3, 2, 1]
  assert sort_descending([20, 10, 30, 40]) == [40, 30, 20, 10]
  assert sort_descending([5]) == [5]
output: def sort_descending(lst):
      return sorted(lst, reverse=True)