<?php

namespace FactoryMethod;

interface BookFactoryInterface
{
    /**
     * @return BookFactoryInterface
     */
    public function createBook();
}
<?php

namespace FactoryMethod;

interface BookFactoryInterface
{
    /**
     * @return BookFactoryInterface
     */
    public function createBook();
}

Add new line according to PSR-2
Add new line according to PSR-2
