boolean function ( ) { return ( _parent == null ) ; }
is this the root of the tree ? concode_field_sep DirectoryNode _parent concode_elem_sep Property _property concode_field_sep boolean isDirectoryEntry concode_elem_sep boolean isDeleteOK concode_elem_sep DirectoryEntry getParent concode_elem_sep Property getProperty concode_elem_sep String getName concode_elem_sep boolean renameTo concode_elem_sep boolean isDocumentEntry concode_elem_sep boolean delete