input: Write a function to generate a set of unique random numbers in the range 0-10 using Python. The function should return the set of numbers.
  
  assert generate_unique_random_numbers()=={5, 3, 7, 10, 1, 2, 6, 4, 9}
  assert generate_unique_random_numbers()=={0, 1, 2, 3, 4, 5, 6, 7, 8, 9},
  assert generate_unique_random_numbers()=={0, 10, 5, 9, 6, 7, 8, 3, 4},
  assert generate_unique_random_numbers()=={10, 9, 8, 7, 6, 5, 4, 3, 2, 1},
  assert generate_unique_random_numbers()=={0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10}
output: import random
  
  def generate_unique_random_numbers():
      return set(random.sample(range(11), 11))