close #42: make error message intuitive, to avoid confusion (#44)
close #42: make error message intuitive, to avoid confusion (#44)


KengoTODA/spotbugs,sewe/spotbugs,sewe/spotbugs,sewe/spotbugs,spotbugs/spotbugs,spotbugs/spotbugs,KengoTODA/spotbugs,spotbugs/spotbugs,johnscancella/spotbugs,KengoTODA/spotbugs,sewe/spotbugs,johnscancella/spotbugs,johnscancella/spotbugs,KengoTODA/spotbugs,spotbugs/spotbugs,spotbugs/spotbugs,johnscancella/spotbugs