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Sander Mark is a Fellow at Luminis in The Netherlands. At Luminis, he crafts modular and scalable software, most often on the JVM but with a touch of TypeScript where needed. He is the author of the O'Reilly book 'Java 9 Modularity' and an avid conference speaker. Sander loves sharing knowledge through his blog at Branch and Bound and also as a Pluralsight instructor.