}

    private void resolveExpression(MacroLookup visibleMacros, Expression expression, ExpressionVisitor visitor, TokenLookup tokenLookup) {
        if (expression.getType() == IncludeType.SYSTEM) {
            visitor.visitSystem(expression);
        } else if (expression.getType() == IncludeType.QUOTED) {
            visitor.visitQuoted(expression);
        } else if (expression.getType() == IncludeType.IDENTIFIER) {