input: Write a function to compute the intersection of two sets of integers. The function should take two sets as input parameters and return the intersection of those sets.
  assert intersection({1, 2, 3, 4}, {3, 4, 5, 6})=={3, 4}
  assert intersection({5, 6, 7}, {8, 9, 10})==set()
  assert intersection({10, 20, 30}, {30, 40, 50})=={30}
  assert intersection(set(), {1, 2, 3})==set()
  assert intersection({1, 2, 3}, set())==set()
output: def intersection(set1, set2):
      return set1 & set2