List nodes = tree.selectNodes( xPathDir ); //$NON-NLS-1$
if ( !nodes.isEmpty() && nodes.size() == 1 ) {
// Add Folder
final Node node = getDirectoryNode( (Node) nodes.get( 0 ), _path );
json.put( "name", node.valueOf( "@name" ) );
json.put( "id", _solution + "/" + _path );
json.put( "solution", _solution );
json.put( "path", _path );
json.put( "type", TYPE_DIR );
json.put( "visible", false );