Fix ungroup.

Normand Briere

2019-06-29 a69bb4474a3264a9a7a7f8b8d8154ea771f167c8

 Checker.java
..
..
@@ -2,7 +2,7 @@
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 {
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     Checker()
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     {
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-        this("Checker");
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+        this("Overlay");
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     }
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     Checker(String name)