Merge pull request #124 from killbill/fix-for-123 #175

Job	Run time
integration_test / jdk-11 mysql2	2m 22s
ci / jdk-11 travis	3m 40s
integration_test / jdk-11 postgresql	2m 45s
ci / verify	1m 33s
ci / jdk-11 travis	10s
ci / jdk-11 integration-mysql	4m 2s
ci / jdk-11 integration-postgresql	1m 34s
ci / jdk-17 travis	1m 27s
ci / jdk-17 integration-mysql	1m 58s
ci / jdk-17 integration-postgresql	4m 3s
	23m 34s

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