input: from typing import List
  
  
  def generate_random_string(string_length: int) -> str:
      """ Generate a random string of the specified length.
      The string will be composed of characters from the set: 
      'abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789'.
      >>> generate_random_string(10)
      'a1B2c3D4e5' # Example output, actual output may vary
      """
output:     import random
      import string
      
      characters = string.ascii_letters + string.digits
      return ''.join(random.choice(characters) for _ in range(string_length))