Fix random/switch node.

Normand Briere

2019-05-01 d1e1417edc8a6ccf195b6da3270f22234dda61e4

 timeflow/model/TFListener.java
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@@ -1,5 +1,6 @@
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 package timeflow.model;
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-public interface TFListener {
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-	public void note(TFEvent e);
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+public interface TFListener
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+{
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+        public void note(TFEvent e);
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 }