Replace/restore buttons.

Normand Briere

2019-07-17 a5580a47d246c1272b10adba68070f6e13da5e41

 Cone.java
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@@ -2,6 +2,7 @@
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 class Cone extends Biparam implements java.io.Serializable
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 {
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+    //static final long serialVersionUID = -679715043452968126L;
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     Cone()
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     {