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- <?php
- namespace Zxing;
- final class ChecksumException extends ReaderException
- {
- private static $instance;
- public static function getChecksumInstance($cause = null)
- {
- if (self::$isStackTrace) {
- return new ChecksumException($cause);
- } else {
- if (!self::$instance) {
- self::$instance = new ChecksumException($cause);
- }
- return self::$instance;
- }
- }
- }
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