public CoverageCollection openAsCoverageDataset(HttpServletRequest request, HttpServletResponse response) throws IOException {
    return datasetManager.openCoverageDataset(request, response, path);
  }
public CoverageCollection openAsCoverageDataset(HttpServletRequest request, HttpServletResponse response) throws IOException {
    return datasetManager.openCoverageDataset(request, response, path);
  }
public CoverageCollection openAsCoverageDataset ( HttpServletRequest request , HttpServletResponse response ) throws IOException { return datasetManager . openCoverageDataset ( request , response , path ) ; }
return null means request has been handled, and calling routine should exit without further processing
return null means request has been handled and calling routine should exit without further processing