refactor: use pattern matching instanceof (Java 16+)#3192
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Motivation: Java 16 introduced pattern matching for instanceof, eliminating the need for explicit casts after type checks. Modification: Replace old-style instanceof checks with explicit casts in PingSerializerExampleTest and ActorDocTest. Most of the codebase already uses pattern matching instanceof. Result: Cleaner code without redundant cast expressions.
This was referenced Jun 26, 2026
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Summary
instanceofchecks with explicit casts to Java 16+ pattern matching instanceofTest plan
sbt javafmtAllpasses with JDK 17