/**
  * Construct a key which represents an individual repository connection.
  *
  * @param connectionName is the name of the connector.
  * @return the cache key.
  */
 protected static String getRepositoryConnectionKey(String connectionName) {
   return CacheKeyFactory.makeRepositoryConnectionKey(connectionName);
 }
 /**
  * Construct a key which represents the general list of repository connectors.
  *
  * @return the cache key.
  */
 protected static String getRepositoryConnectionsKey() {
   return CacheKeyFactory.makeRepositoryConnectionsKey();
 }