code: def get_filters(self):
          
          if self._filters:
              filters_list = self._filters
              if isinstance(filters_list[-1], Enum):
                  filters_list = filters_list[:-1]
              return ' '.join(
                  [fs.value if isinstance(fs, Enum) else fs[1] for fs in
                   filters_list]).strip()
          else:
              return None
docs: Returns the result filters
  
          :rtype: str or None