MessageFileContent

fun MessageFileContent(    @Json(name = "msgtype") msgType: String,     @Json(name = "body") body: String,     @Json(name = "filename") filename: String? = null,     @Json(name = "info") info: FileInfo? = null,     @Json(name = "url") url: String? = null,     @Json(name = "m.relates_to") relatesTo: RelationDefaultContent? = null,     @Json(name = "m.new_content") newContent: Content? = null,     @Json(name = "file") encryptedFileInfo: EncryptedFileInfo? = null)