https://api.itextpdf.com/iText/java/9.0.0/com/itextpdf/kernel/crypto/securityhandler/StandardHandlerUsingAesGcm.html
StandardHandlerUsingAesGcm (iText 9.0.0 API)
declaration: package: com.itextpdf.kernel.crypto.securityhandler, class: StandardHandlerUsingAesGcm
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