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Editing: Point.php

<?php

namespace BitPayKeyUtils\Util;

/**
 * Object to represent a point on an elliptic curve
 *
 * @package Bitcore
 */
class Point implements PointInterface
{
    /**
     * MUST be a HEX value
     *
     * @var string
     */
    protected $x;

/**
     * MUST be a HEX value
     *
     * @var string
     */
    protected $y;

/**
     * @param string $x
     * @param string $y
     */
    public function __construct($x, $y)
    {
        $this->x = (string)$x;
        $this->y = (string)$y;
    }

/**
     * @return string
     */
    public function __toString()
    {
        if ($this->isInfinity()) {
            return self::INFINITY;
        }

return sprintf('(%s, %s)', $this->x, $this->y);
    }

/**
     * @return boolean
     */
    public function isInfinity()
    {
        return (self::INFINITY == $this->x || self::INFINITY == $this->y);
    }

/**
     * @return string
     */
    public function getX()
    {
        return $this->x;
    }

/**
     * @return string
     */
    public function getY()
    {
        return $this->y;
    }

/**
     * @inheritdoc
     */
    public function serialize()
    {
        return serialize(array($this->x, $this->y));
    }

/**
     * @inheritdoc
     */
    public function unserialize($data)
    {
        list(
            $this->x,
            $this->y
            ) = unserialize($data);
    }

/**
     * @return array
     */
    public function __serialize(): array
    {
        return array($this->x, $this->y);
    }

/**
     * @param array $data
     */
    public function __unserialize(array $data): void
    {
        list(
            $this->x,
            $this->y
            ) = $data;
    }
}

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