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Fix for issue 1281

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Pull request title - Added Pessimistic Concurrency Pattern - Addresses #1281 Pull request description - Implements Pessimistic Concurrency Pattern based on provided resource: http://ommolketab.ir/aaf-lib/axkwht7wxrhvgs2aqkxse8hihyu9zv.pdf chapter 10.2 & B-5 > For...

Add option to delete XMP metadata

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Fixes #8277 - [ ] Change in `CHANGELOG.md` described in a way that is understandable for the average user (if applicable) - [ ] Tests created for changes (if applicable)...