src/Parser/Parser.php
protected function parseOperand4(MapNode $node, ArrayAccessor $accessor = null): Node
    {
        return ($accessor === null) ? $node : new Access($node, $accessor);
    }
protected function parseOperand4(MapNode $node, ArrayAccessor $accessor = null): Node
    {
        return ($accessor === null) ? $node : new Access($node, $accessor);
    }
Operand ::= Map ArrayAccessor?