code: public WaybackRequest parse(HttpServletRequest httpRequest, 
  			AccessPoint wbContext) throws BadQueryException, BetterRequestException {
  
  		WaybackRequest wbRequest = null;
  
  		for(int i = 0; i < parsers.length; i++) {
  			wbRequest = parsers[i].parse(httpRequest, wbContext);
  			if(wbRequest != null) {
  				break;
  			}
  		}
  		return wbRequest;
  	}
docs: /* (non-Javadoc)
  @see org.archive.wayback.RequestParser#parse(javax.servlet.http.HttpServletRequest)