tabsListItem parent protocol conformance

MVMCoreUI/Atomic/Molecules/Items/TabsListItemModel.swift

@@ -9,7 +9,7 @@
 import UIKit
 
 
-public class TabsListItemModel: ListItemModel, MoleculeModelProtocol {
+public class TabsListItemModel: ListItemModel, ParentMoleculeModelProtocol {
     //--------------------------------------------------
     // MARK: - Properties
     //--------------------------------------------------
@@ -19,6 +19,23 @@ public class TabsListItemModel: ListItemModel, MoleculeModelProtocol {
     var molecules: [[ListItemModelProtocol & MoleculeModelProtocol]]
     private var addedMolecules: [ListItemModelProtocol & MoleculeModelProtocol]?
 
+    public var children: [MoleculeModelProtocol] {
+        return molecules.flatMap { $0 }
+    }
+    
+    public func replaceChildMolecule(with replacementMolecule: MoleculeModelProtocol) throws -> Bool {
+        guard let replacementMolecule = replacementMolecule as? ListItemModelProtocol & MoleculeModelProtocol else { return false }
+        for (tabIndex, _) in molecules.enumerated() {
+            for (elementIndex, _) in molecules[tabIndex].enumerated() {
+                if molecules[tabIndex][elementIndex].id == replacementMolecule.id {
+                    molecules[tabIndex][elementIndex] = replacementMolecule
+                    return true
+                }
+            }
+        }
+        return false
+    }
+    
     //--------------------------------------------------
     // MARK: - Keys
     //--------------------------------------------------