public OPCPackage getOPCPackage() {
        return opcPackage;
    }
This is a wrapper around OPCPackage that calls revert() instead of close().
We added this during the upgrade of POI to 5.x to avoid a warning.

TIKA-3663
tika-parsers/tika-parsers-standard/tika-parsers-standard-modules/tika-parser-microsoft-module/src/main/java/org/apache/tika/parser/microsoft/ooxml/OPCPackageWrapper.java