interface FeedItemOptionsimport { type FeedItemOptions } from "https://dotland.deno.dev/x/lume@v2.4.2/plugins/feed.ts"; Propertiesoptionaltitle: string | ((data: Data) => string | undefined)The item title optionaldescription: string | ((data: Data) => string | undefined)The item description optionalpublished: string | ((data: Data) => Date | undefined)The item published date optionalupdated: string | ((data: Data) => Date | undefined)The item updated date optionalcontent: string | ((data: Data) => string | undefined)The item content optionallang: string | ((data: Data) => string | undefined)The item language optionalimage: string | ((data: Data) => string | undefined)The item image optionalauthorName: stringThe item author name optionalauthorUrl: stringThe item author URL