How to add markers

Markers.swift

func addMarkers() {
    let source = self.sdk.sourceFactory.createGeometryMapObjectSource()
    self.sdk.map.addSource(source: source)

    struct Marker {
        let svg: Data
        let latitude: Double
        let longitude: Double
        let anchor: CGPoint = CGPoint(x: 0.5, y: 0.5)
    }

    let photo = NSDataAsset(name: "svg_photo")!.data
    let water = NSDataAsset(name: "svg_water")!.data

    let markers: [Marker] = [
        Marker(svg: photo, latitude: 55.53739580689267, longitude: 37.66256779432297),
        Marker(svg: water, latitude: 55.57043582413208, longitude: 37.441149428486824)
    ]

    for marker in markers {
        do {
            let mapObject = try MarkerBuilder()
                .setIcon(svg: marker.svg)
                .setPosition(latitude: marker.latitude, longitude: marker.longitude)
                .setAnchor(marker.anchor)
                .build()
            source.addObject(item: mapObject)
        } catch {
            print("Failed to build a marker with info: \(marker). Error: \(error)")
        }
    }

    do {
        let markerWithText = try MarkerBuilder()
            .setIcon(svg: photo)
            .setPosition(latitude: 55.67895765839564, longitude: 37.45498484931886)
            .setText(text: "Here!")
            .build()
        source.addObject(item: markerWithText)
    } catch {
        print("Failed to build text marker. Error: \(error).")
    }
}