Index: maven-plugin-descriptor/src/main/java/org/apache/maven/plugin/descriptor/MojoDescriptor.java
===================================================================
--- maven-plugin-descriptor/src/main/java/org/apache/maven/plugin/descriptor/MojoDescriptor.java	(revision 431192)
+++ maven-plugin-descriptor/src/main/java/org/apache/maven/plugin/descriptor/MojoDescriptor.java	(arbetskopia)
@@ -86,6 +86,8 @@
 
     private boolean requiresReports = false;
 
+    private String since;
+
     public MojoDescriptor()
     {
         setInstantiationStrategy( DEFAULT_INSTANTIATION_STRATEGY );
@@ -437,4 +439,14 @@
     {
         return executeGoal;
     }
+
+    public String getSince()
+    {
+        return since;
+    }
+
+    public void setSince( String since )
+    {
+        this.since = since;
+    }
 }