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/*
 * This file is part of the Symfony package.
 *
 * (c) Fabien Potencier &lt;fabien@symfony.com&gt;
 *
 * For the full copyright and license information, please view the LICENSE
 * file that was distributed with this source code.
 */

namespace Symfony\Contracts\Service;

use Psr\Container\ContainerInterface;

/**
 * A ServiceProviderInterface exposes the identifiers and the types of services provided by a container.
 *
 * @author Nicolas Grekas &lt;p@tchwork.com&gt;
 * @author Mateusz Sip &lt;mateusz.sip@gmail.com&gt;
 */
interface ServiceProviderInterface extends ContainerInterface
{
    /**
     * Returns an associative array of service types keyed by the identifiers provided by the current container.
     *
     * Examples:
     *
     *  * ['logger' =&gt; 'Psr\Log\LoggerInterface'] means the object provides a service named &quot;logger&quot; that implements Psr\Log\LoggerInterface
     *  * ['foo' =&gt; '?'] means the container provides service name &quot;foo&quot; of unspecified type
     *  * ['bar' =&gt; '?Bar\Baz'] means the container provides a service &quot;bar&quot; of type Bar\Baz|null
     *
     * @return string[] The provided service types, keyed by service names
     */
    public function getProvidedServices(): array;
}
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