NotImplementedException NotImplementedError, useful for testing, it allows you to know where you are and the cause of the failure. + Not yet implemented, allows raising the correct exception. + There is: http://commons.apache.org/proper/commons-lang/javadocs/api-release/org/apache/commons/lang3/NotImplementedException.html[org.apache.commons.lang3.NotImplementedException]+https://kotlinlang.org/api/latest/jvm/stdlib/kotlin/-not-implemented-error/[kotlin.NotImplementedError]

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