code: def gotonext(self):
          
          while self.pos < len(self.field):
              if self.field[self.pos] in self.LWS + '\n\r':
                  self.pos = self.pos + 1
              elif self.field[self.pos] == '(':
                  self.commentlist.append(self.getcomment())
              else: break
docs: Parse up to the start of the next address.