How can I remove all annotations? about fbannotationclusteringswift HOT 3 OPEN

            self.clusteringManager.setAnnotations([])//remove all annotations
            if(!self.mapView.annotations.isEmpty){
                self.mapView.removeAnnotations(self.mapView.annotations)
            }

   let allAnnotation = self.map.annotations
        self.map.removeAnnotations(allAnnotation)
        var all =  self.clusteringManager.allAnnotations
        all.removeAll()