design-patterns

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<?php
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namespace App\Creational\Prototype;
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abstract class BookPrototype
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{
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    /**
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     * @var string
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     */
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    protected string $title;
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    /**
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     * @var string
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     */
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    protected string $category;
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    /**
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     * @return mixed
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     */
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    abstract public function __clone();
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    /**
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     * @return string
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     */
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    final public function getTitle(): string
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    {
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        return $this->title;
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    }
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    /**
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     * @param string $title
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     */
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    final public function setTitle(string $title): void
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    {
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        $this->title = $title;
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    }
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}
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