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[EDIT] FILE: BinaryOp.php

<?php declare(strict_types=1);

namespace PhpParser\Node\Expr;

use PhpParser\Node\Expr;

abstract class BinaryOp extends Expr {
    /** @var Expr The left hand side expression */
    public Expr $left;
    /** @var Expr The right hand side expression */
    public Expr $right;

/**
     * Constructs a binary operator node.
     *
     * @param Expr $left The left hand side expression
     * @param Expr $right The right hand side expression
     * @param array<string, mixed> $attributes Additional attributes
     */
    public function __construct(Expr $left, Expr $right, array $attributes = []) {
        $this->attributes = $attributes;
        $this->left = $left;
        $this->right = $right;
    }

public function getSubNodeNames(): array {
        return ['left', 'right'];
    }

/**
     * Get the operator sigil for this binary operation.
     *
     * In the case there are multiple possible sigils for an operator, this method does not
     * necessarily return the one used in the parsed code.
     */
    abstract public function getOperatorSigil(): string;
}

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