org.yarnandtail:andhow-annotation-processor-tests (maven):  'Real world' compile-time testing of the annotation processor. Its impossible/hard to fully replicate the compile time environment including annotation processing, class generation, service loading, etc.. This module contains standard and edge case classes container AndHow properties. Unit tests then check to ensure that PropertyRegistrars were generated and registered as services for each top level class containing Properties. 
Keywords: config|configuration|hacktoberfest|java|java-configuration|strongly-typed