check point

framework/MaterialSkin.Core/Animations/AnimationDirection.cs

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+namespace MaterialSkin.Animations
+{
+    enum AnimationDirection
+    {
+        In, //In. Stops if finished.
+        Out, //Out. Stops if finished.
+        InOutIn, //Same as In, but changes to InOutOut if finished.
+        InOutOut, //Same as Out.
+        InOutRepeatingIn, // Same as In, but changes to InOutRepeatingOut if finished.
+        InOutRepeatingOut // Same as Out, but changes to InOutRepeatingIn if finished.
+    }
+}