@Nullable
    @Override
    public ASTNode getModifier() {
        final ASTNode[] nodes = getNode().getChildren(RegExpTT.QUANTIFIERS);
        if (nodes.length > 1) {
            final ASTNode node = nodes[1];
            final IElementType type = node.getElementType();
            if (type == RegExpTT.QUEST || type == RegExpTT.PLUS) {
                return node;
            }
        }
        return null;
    }
@Nullable
    @Override
    public ASTNode getModifier()