docs: function () {
              var orchardDownload = (options.url) ? { version: options.version, url: options.url } : helpers.getOrchardDownload(options.version);
  
              if (!orchardDownload) {
                  grunt.fail.fatal('Unrecognised Orchard version number.');
                  // TODO: Add information on how to setup custom version of Orchard.
              }
  
              // check if the Orchard version has already been setup.
              fs.exists(options.localDir, function (exists) {
                  if (exists) {
                      done();
                      return;
                  }
  
                  // Orchard hasn't been setup yet, it must be downloaded first.
                  download(orchardDownload);
              });
          }