SwiftDocCRenderContentMetadataStructureRenderContentMetadataAdditional metadata that might belong to a content element.struct RenderContentMetadataTopicsInitializersinit(anchor: String?, title: String?, abstract: [RenderInlineContent]?, deviceFrame: String?)Creates a new metadata value for a content element.init(from: any Decoder) throwsInstance Propertiesvar abstract: [RenderInlineContent]?An optional custom abstract.var anchor: String?An optional named anchor to the current element.var deviceFrame: String?An optional identifier for the device frame that should wrap this element.var title: String?An optional custom title.Instance Methodsfunc rawIndexableTextContent(references: [String : any RenderReference]) -> String