Import old content, load from disk

CHDataManagement/Extensions/Optional+Extensions.swift

@@ -0,0 +1,9 @@
+import Foundation
+
+extension Optional {
+
+    func map<T>(_ transform: (Wrapped) throws -> T?) rethrows -> T? {
+        guard let self else { return nil }
+        return try transform(self)
+    }
+}