SwiftDocCRenderBlockContentRenderBlockContent.RowRenderBlockContent.Row.ColumnStructureRenderBlockContent.Row.ColumnA column with a row in a grid-based layout system.struct ColumnTopicsInitializersinit(from: any Decoder) throwsInstance Propertiesvar content: [RenderBlockContent]The content that should be rendered in this column.var size: IntThe number of columns in the parent row this column should span.