Additional Checkstyle checks, that could be added as extension to EclipseCS plugin and maven-checkstyle-plugin, Sonar checkstyle plugin, extension for CheckStyle IDEA plugin.
Coverage remained the same at 98.798% when pulling 9f8ebd5e9eddab04ead9489335bc64159f5d5d52 on rnveach:source_plugin into baa11408d485b51f1aca3e4db9dc99ff47672565 on sevntu-checkstyle:master.
Haven't tested, but this is the likely issue.