How i can add videowatermark in agora ui kit because i am able to add WatermarkOptions

[ankit-deligence3112]

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[ankit-deligence3112]

i try liked this await client.engine.addVideoWatermark(watermarkUrl: ImagePaths.marker, options:WatermarkOptions.visibleInPreview); but its give error Undefined name 'WatermarkOptions'.