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New expression dereferencing
-----
<?php

(new A)->b;
(new A)->b();
(new A)['b'];
(new A)['b']['c'];
-----
array(
    0: Expr_PropertyFetch(
        var: Expr_New(
            class: Name(
                parts: array(
                    0: A
                )
            )
            args: array(
            )
        )
        name: b
    )
    1: Expr_MethodCall(
        var: Expr_New(
            class: Name(
                parts: array(
                    0: A
                )
            )
            args: array(
            )
        )
        name: b
        args: array(
        )
    )
    2: Expr_ArrayDimFetch(
        var: Expr_New(
            class: Name(
                parts: array(
                    0: A
                )
            )
            args: array(
            )
        )
        dim: Scalar_String(
            value: b
        )
    )
    3: Expr_ArrayDimFetch(
        var: Expr_ArrayDimFetch(
            var: Expr_New(
                class: Name(
                    parts: array(
                        0: A
                    )
                )
                args: array(
                )
            )
            dim: Scalar_String(
                value: b
            )
        )
        dim: Scalar_String(
            value: c
        )
    )
)

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