SwiftDocCRenderBlockContentRenderBlockContent.VideoStructureRenderBlockContent.VideoA video with an optional caption.struct VideoTopicsInitializersinit(from: any Decoder) throwsinit(identifier: RenderReferenceIdentifier, metadata: RenderContentMetadata?)Create a new video with the given identifier and metadata.Instance Propertieslet identifier: RenderReferenceIdentifierA reference to the video media that should be rendered in this block.var metadata: RenderContentMetadata?Any metadata associated with this video, like a caption.