get a list of principal names . concode_field_sep List<String> principalNames concode_elem_sep SyncType syncType concode_elem_sep PrincipalType principalType concode_field_sep PrincipalType valueOfIgnoreCase concode_elem_sep SyncType valueOfIgnoreCase concode_elem_sep PrincipalType getPrincipalType concode_elem_sep SyncType getSyncType
List < String > function ( ) { return principalNames ; }