return false;
	private void rewriteConstraintVariable(ConstraintVariable2 cv, CompilationUnitRewrite rewrite) {		if (cv instanceof CollectionElementVariable2) {			ConstraintVariable2 parentElement= ((CollectionElementVariable2) cv).getParentConstraintVariable();			if (parentElement instanceof TypeVariable2) {				TypeVariable2 typeCv= (TypeVariable2) parentElement;				rewriteTypeVariable(typeCv, rewrite);			} else {				//only rewrite type variables			}		}	}