public SelectionOnQualifiedNameReference(
     char[][] previousIdentifiers, char[] selectionIdentifier, long[] positions) {
   super(
       CharOperation.arrayConcat(previousIdentifiers, selectionIdentifier),
       positions,
       (int) (positions[0] >>> 32),
       (int) positions[positions.length - 1]);
 }
 @Override
 public NameEnvironmentAnswer findType(char[] type, char[][] pkg) {
   return findType(CharOperation.arrayConcat(pkg, type));
 }