code: def generate(self, pattern=None):
          
          lst = self._lists[pattern]
          while True:
              result = lst[self._randrange(lst.length)]
              # 1. Check that there are no duplicates
              # 2. Check that there are no duplicate prefixes
              # 3. Check max slug length
              n = len(result)
              if (self._ensure_unique and len(set(result)) != n or
                      self._check_prefix and len(set(x[:self._check_prefix] for x in result)) != n or
                      self._max_slug_length and sum(len(x) for x in result) + n - 1 > self._max_slug_length):
                  continue
              return result
docs: Generates and returns random name as a list of strings.