How to use the react-native-ble-manager.stopScan function in react-native-ble-manager

stopScan() {
        BleManager.stopScan()
            .then(() => {
                console.log('Scan stopped');
            }).catch((err)=>{
	            console.log('Scan stopped fail',err);
	        });
    }

stopScan() {
        BleManager.stopScan()
            .then(() => {
                console.log('Scan stopped');
            }).catch((err)=>{
	            console.log('Scan stopped fail',err);
	        });
    }