log_adapter.go
func (la *LogAdapter) Debugm(m *Attrs, msg string, a ...interface{}) error {
	return la.Log(LevelDebug, m, msg, a...)
}
func (la *LogAdapter) Debugm(m *Attrs, msg string, a ...interface{}) error {
	return la.Log(LevelDebug, m, msg, a...)
}
/*
Debugm uses msg as a format string with subsequent parameters as values and logs
the resulting message to all added loggers at LogLevel.LevelDebug. It will also
merge all attributes passed in m with any attributes added to Base and include them
with the message if the Logger supports it.
*/