Added missing methods (still to be implemented)

src/main/java/org/gcube/gcat/client/Item.java

@@ -122,4 +122,22 @@ public class Item extends GCatClient implements org.gcube.gcat.api.interfaces.It
 		return null;
 	}
 
+	@Override
+	public String approve(String moderatorMessage) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public String reject(String moderatorMessage) {
+		// TODO Auto-generated method stub
+		return null;
+	}
+
+	@Override
+	public void message(String message) {
+		// TODO Auto-generated method stub
+		
+	}
+
 }