Verifies the integrety of the projects, as builds are executed immediately after a code change was detected. This plan provides no artifiacts (use a nightly build instead).
Make Objects.requireNonNull() throw IllegalArgumentException
and not NullPointerException. Altough this differs from
java.util.Objects behavior, throwing an IllegalArgumentException
appears more sensible and makes it easier to catch it in Smack's
parsing function.