[cleanup] Add some documentation for a warning

Change-Id: Ifba41c506c99c0e29235b8fc8c004610ec330f76
Signed-off-by: Stéphane Bégaudeau <stephane.begaudeau@obeo.fr>
diff --git a/plugins/org.eclipse.sirius.properties.core/src/org/eclipse/sirius/properties/core/internal/SiriusPropertiesCorePlugin.java b/plugins/org.eclipse.sirius.properties.core/src/org/eclipse/sirius/properties/core/internal/SiriusPropertiesCorePlugin.java
index e77272f..08a3f6c 100644
--- a/plugins/org.eclipse.sirius.properties.core/src/org/eclipse/sirius/properties/core/internal/SiriusPropertiesCorePlugin.java
+++ b/plugins/org.eclipse.sirius.properties.core/src/org/eclipse/sirius/properties/core/internal/SiriusPropertiesCorePlugin.java
@@ -50,6 +50,7 @@
  * 
  * @author sbegaudeau
  */
+@SuppressWarnings("restriction") // EValidatorAdapter for the validation of the properties
 public class SiriusPropertiesCorePlugin extends EMFPlugin {
     /**
      * The identifier of the plugin.