// AddFilter add the filter to this FilterManager
AddFilter add the filter to this FilterManager
// AddFilter add the filter to this FilterManager
func (fm *filterManager) AddFilter(filter ...Filter) {
	fm.fmLocker.Lock()
	if len(filter) > 0 {
		fm.filters = append(fm.filters, filter...)
	}
	fm.fmLocker.Unlock()
}
func ( fm * filterManager ) AddFilter ( filter ... Filter ) { fm . fmLocker . Lock ( ) if len ( filter ) > 0 { fm . filters = append ( fm . filters , filter ... ) } fm . fmLocker . Unlock ( ) }
AddFilter add the filter to this FilterManager
AddFilter add the filter to this FilterManager