FingerprintCollection.php

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<?php

namespace SAML2\Certificate;

use SAML2\Exception\InvalidArgumentException;
use SAML2\Utilities\ArrayCollection;

class FingerprintCollection extends ArrayCollection
{
    public function add($fingerprint)
    {
        if (!$fingerprint instanceof Fingerprint) {
            throw InvalidArgumentException::invalidType(
                'SAML2\Certificate\Fingerprint ',
                $fingerprint
            );
        }

        parent::add($fingerprint);
    }

    public function contains(Fingerprint $otherFingerprint)
    {
        foreach ($this->elements as $fingerprint) {
            if ($fingerprint->equals($otherFingerprint)) {
                return true;
            }
        }

        return false;
    }
}