code: def get_trees(self, data, showerrors = False): # -> list:
          
          if showerrors:
              raise NotImplementedError("This parser doesn't implement errors")
          self.data = data
          self.index = 0
          try:
              return [self.__aux_parser(self._productionset.initialsymbol)]
          except (IndexError, ParseError):
              return []
docs: returns a list of trees with valid guesses