unism conversion #5396

Job	Run time
Assert tests with Java 11 on Windows	49m 28s
Assert tests and javadoc with Java 11 on Ubuntu	54m 35s
Assert tests with Java 21 on Windows	1h 21m 39s
Assert tests with Java 8 on Windows	3h 38m 57s
Assert tests with Java 8 on Ubuntu	3h 33m 45s
Assert tests with Java 21 on Ubuntu	1h 20m 10s
	11h 38m 34s

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