package installer type Logger interface { Successf(format string, args ...interface{}) Failuref(format string, args ...interface{}) Info(args ...interface{}) Infof(format string, args ...interface{}) Debug(args ...interface{}) Debugf(format string, args ...interface{}) Warn(args ...interface{}) Warnf(format string, args ...interface{}) Error(args ...interface{}) Errorf(format string, args ...interface{}) }