code: private synchronized List<Entry> getEntriesList( DirectoryEntry directory )
      {
          List<Entry> entries = contents.get( directory );
          if ( entries == null )
          {
              entries = new ArrayList<Entry>();
              contents.put( directory, entries );
          }
          return entries;
      }
docs: Gets the list of entries in the specified directory.
  
  @param directory the directory to get the entries of.
  @return the list of entries (never <code>null</code>).
  @since 1.0