Undocumented NPE if Stapler.getCurrent() called outside an HTTP handling thread
#596
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https://github.com/jenkinsci/jenkins/blob/e1a6b190d4d71e95a8e00facd52ce7718909b9e8/core/src/main/java/hudson/model/TopLevelItemDescriptor.java#L146-L175 seems to assume this method can be called safely and return null. (I tried to write an integration test but every
TopLevelItemDescriptorsubclass seems to override this method.) https://github.com/jenkinsci/support-core-plugin/blob/a85622b87b52a0ebaf3ecf97c7a443df546e4242/src/main/java/com/cloudbees/jenkins/support/impl/AboutJenkins.java#L507-L517 notes the poor behavior.