logging.go
func (logger *Logger) ClearHandlers() {
	logger.lock.Lock()
	logger.closeHandlers()
	logger.Handlers = make([]Handler, 0)
	logger.flushBuffer()
	logger.lock.Unlock()
}
func (logger *Logger) ClearHandlers() {
	logger.lock.Lock()
	logger.closeHandlers()
	logger.Handlers = make([]Handler, 0)
	logger.flushBuffer()
	logger.lock.Unlock()
}
// ClearHandlers removes all handlers from current logger.