return the binding iterator repository id . concode_field_sep String _id concode_field_sep BindingIterator extract concode_elem_sep BindingIterator read concode_elem_sep void insert concode_elem_sep BindingIterator narrow concode_elem_sep TypeCode type concode_elem_sep void write concode_elem_sep BindingIterator unchecked_narrow
String function ( ) { return _id ; }