base.go
func (b *Base) Warnm(m *Attrs, msg string, a ...interface{}) error {
	return b.Warningm(m, msg, a...)
}
func (b *Base) Warnm(m *Attrs, msg string, a ...interface{}) error {
	return b.Warningm(m, msg, a...)
}
// Warnm is a short-hand version of Warningm