code: function synchronizeEntry(id) {
          var entry = extensions[id];
  
          // Do nothing if we only have one set of data
          if (!entry || !entry.installInfo || !entry.registryInfo) {
              return;
          }
  
          entry.installInfo.owner = entry.registryInfo.owner;
  
          // Assume false
          entry.installInfo.updateAvailable   = false;
          entry.registryInfo.updateAvailable  = false;
          entry.installInfo.updateCompatible  = false;
          entry.registryInfo.updateCompatible = false;
  
          var currentVersion = entry.installInfo.metadata ? entry.installInfo.metadata.version : null;
          if (currentVersion && semver.lt(currentVersion, entry.registryInfo.metadata.version)) {
              // Note: available update may still be incompatible; we check for this when rendering the Update button in ExtensionManagerView._renderItem()
              entry.registryInfo.updateAvailable  = true;
              entry.installInfo.updateAvailable   = true;
              // Calculate updateCompatible to check if there's an update for current version of Brackets
              var lastCompatibleVersionInfo = _.findLast(entry.registryInfo.versions, function (versionInfo) {
                  return !versionInfo.brackets || semver.satisfies(brackets.metadata.apiVersion, versionInfo.brackets);
              });
              if (lastCompatibleVersionInfo && lastCompatibleVersionInfo.version && semver.lt(currentVersion, lastCompatibleVersionInfo.version)) {
                  entry.installInfo.updateCompatible        = true;
                  entry.registryInfo.updateCompatible       = true;
                  entry.installInfo.lastCompatibleVersion   = lastCompatibleVersionInfo.version;
                  entry.registryInfo.lastCompatibleVersion  = lastCompatibleVersionInfo.version;
              }
          }
  
          exports.trigger("registryUpdate", id);
      }
docs: @private
  Synchronizes the information between the public registry and the installed
  extensions. Specifically, this makes the `owner` available in each and sets
  an `updateAvailable` flag.
  
  @param {string} id of the extension to synchronize