Debug is equivalent to log.Print(), but prefixed with "[DEBUG] ".

Debugf is equivalent to log.Printf(), but prefixed with "[DEBUG] ".

DeregisterListener deregister a listener object.

Discard sets the log output to /dev/null.

Error is equivalent to log.Print, but prefixed with "[ERROR] ".

Errorf is equivalent to log.Printf, but prefixed with "[ERROR] ".

Fatal is equivalent to log.Print, but prefixed with "[FATAL] ", and calling os.Exit(1).

Fatalf is equivalent to log.Printf, but prefixed with "[FATAL] ", and calling os.Exit(1).

Info is equivalent to log.Print, but prefixed with "[INFO] ".

Infof is equivalent to log.Printf, but prefixed with "[INFO] ".

NewWithPlugin returns a logger that includes "plugin/name: " in the log message.

RegisterListener register a listener object.

Warning is equivalent to log.Print, but prefixed with "[WARNING] ".

Warningf is equivalent to log.Printf, but prefixed with "[WARNING] ".

D controls whether we should output debug logs.

P is a logger that includes the plugin doing the logging.

Listener listens for all log prints of plugin loggers aka loggers with plugin name.