majro update

app/lib/extensions/nullable.dart

@@ -1,7 +1,26 @@
-extension NullableX<T> on T? {
+extension NullableX<T extends Object?> on T? {
   @pragma('vm:prefer-inline')
   R? mapNotNull<R>(R? Function(T) callback) {
-    // ignore: null_check_on_nullable_type_parameter validated
-    return (this != null) ? callback(this!) : null;
+    // We can simplify this by using the null-aware operator
+    return this != null ? callback(this as T) : null;
   }
 }
+
+extension NullableStringX on String? {
+  @pragma('vm:prefer-inline')
+  String? get whenNotEmpty => (this?.isNotEmpty ?? false) ? this : null;
+
+  @pragma('vm:prefer-inline')
+  bool get isNotEmpty => this?.isNotEmpty ?? false;
+
+  @pragma('vm:prefer-inline')
+  bool get isEmpty => this?.isEmpty ?? true;
+}
+
+extension NullableIterable on Iterable? {
+  @pragma('vm:prefer-inline')
+  bool get isNotEmpty => this?.isNotEmpty ?? false;
+
+  @pragma('vm:prefer-inline')
+  bool get isEmpty => this?.isEmpty ?? true;
+}