code: def jumpTo(self, bytes):
          
          newPosition = self[self.position:].find(bytes)
          if newPosition > -1:
              # XXX: This is ugly, but I can't see a nicer way to fix this.
              if self._position == -1:
                  self._position = 0
              self._position += (newPosition + len(bytes) - 1)
              return True
          else:
              raise StopIteration
docs: Look for the next sequence of bytes matching a given sequence. If
          a match is found advance the position to the last byte of the match