docs: public IServletWrapper createServletWrapper(IServletConfig config) throws Exception
  	{
  		String filename = _webapp.getRealPath(config.getFileName());
  		if(filename != null){
  			File wrapperedFile = new File (filename);
  			if(wrapperedFile.exists()){
  				return this.getStaticFileWrapper(_webapp, this, wrapperedFile);
  			}
  		}
  		return null;
  		
  	}