access to the file extension corresponding to this format . concode_field_sep Type DEFAULT concode_elem_sep String extension concode_elem_sep int size concode_elem_sep FontSize DEFAULT concode_elem_sep String mimetype concode_elem_sep String command concode_field_sep int getSize concode_elem_sep String process concode_elem_sep String getCommand concode_elem_sep String getMimetype concode_elem_sep ImageData getImage
String function ( ) { return this . extension ; }