docs: def base62_encode(cls, num):
          """Encode a number in Base X.
  
          `num`: The number to encode
          `alphabet`: The alphabet to use for encoding
          Stolen from: http://stackoverflow.com/a/1119769/1144479
  
          """
  
          alphabet = "0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ"
  
          if num == 0:
              return alphabet[0]
          arr = []
          base = len(alphabet)
          while num:
              rem = num % base
              num = num // base
              arr.append(alphabet[rem])
          arr.reverse()
          return ''.join(arr)