RxDataSources - get data

get datasource element.swift

func collectionView(_ collectionView: UICollectionView, heightForAnnotationAtIndexPath indexPath: IndexPath, withWidth width: CGFloat) -> CGFloat {
   
  
    let x = dataSource?[indexPath]
    let font = UIFont(name: "OpenSans", size: 11)!

    let rect = NSString(string: x?.brief ?? "").boundingRect(with: CGSize(width: width, height: CGFloat(MAXFLOAT)), options: .usesLineFragmentOrigin, attributes: [NSFontAttributeName: font], context: nil)
    
    // if multiple types
    
    
    //    var height = 400
    //
    //    switch x! {
    //    case let .feedUpdateSectionItem(item):
    //      if item.prototypeUpdate?.media.first != nil {
    //        height = 403
    //      } else {
    //        height = 203
    //      }
    //    case let .feedProjectSectionItem(item):
    //      if item.prototype?.media != nil {
    //        height = 426
    //      } else {
    //        height = 203
    //      }
    //
    //    case let .feedIdeaSectionItem(item):
    //      if item.idea?.media.first != nil {
    //        height = 426
    //      } else {
    //        height = 146
    //      }