checks if a location is unknown , i.e. it is either null or equal to location #unknown . concode_field_sep List<WeakReference<LocationFinder>> finders concode_elem_sep String UNKNOWN_STRING concode_field_sep Location getLocation concode_elem_sep Location getLocation concode_elem_sep Location getLocation concode_elem_sep void addFinder concode_elem_sep boolean isKnown concode_elem_sep String toString concode_elem_sep LocationImpl parse
boolean function ( Location arg0 ) { return arg0 == null || Location . UNKNOWN . equals ( arg0 ) ; }