package log import "io" type MachineLogger interface { SetDebug(debug bool) SetOutWriter(io.Writer) SetErrWriter(io.Writer) Debug(args ...interface{}) Debugf(fmtString string, args ...interface{}) Error(args ...interface{}) Errorf(fmtString string, args ...interface{}) Info(args ...interface{}) Infof(fmtString string, args ...interface{}) Fatal(args ...interface{}) Fatalf(fmtString string, args ...interface{}) Warn(args ...interface{}) Warnf(fmtString string, args ...interface{}) History() []string }