ios - How can I use UICollectionViewCells in the UITableViewcells -

where 1 of tableviewcell must have collectionview , other custom tableviewcells have different number of labels , imageviews.here code viewcontroller:

func tableview(_tableview:uitableview,numberofrowsinsection section: int)->int{     return seachable.count }  func tableview(_ tableview: uitableview, cellforrowat indexpath: indexpath) -> uitableviewcell {     if seachable[indexpath.row].first.name != nil{         let cell  = tableview.dequeuereusablecell(withidentifier: "cell1", for: indexpath) as! fristtableviewcell         cell.firstone.text = seachable[indexpath.row].first.name         return cell     }     .........and on     else {         let cell=tableview.dequeuereusablecell(withidentifier:"cell4",for: indexpath) as! fourtableviewcell         cell.collectioinview1.reloaddata()         return cell     } 

below code tableviewcell collectionview:

extension fourtableviewcell : uicollectionviewdatasource,uicollectionviewdelegate {     func numberofsections(in collectionview: uicollectionview) -> int {         return 1     }     func collectionview(_ collectionview: uicollectionview, numberofitemsinsection section: int) -> int {         return 10      }     func collectionview(_ collectionview: uicollectionview, cellforitemat indexpath: indexpath) -> uicollectionviewcell {          let cell = collectionview.dequeuereusablecell(withreuseidentifier: "collectioncell", for: indexpath) as! onecollectionviewcell         cell.collectioncelllabel.text = "a"         return cell     } } 

the error have :the behavior of uicollectionviewflowlayout not defined because: