@@ -0,0 +1,341 @@
+package org.apache.hadoop.util;%0A%0Apublic class DevUtils %7B%0A%0A    public static void printStackTrace() %7B%0A        try %7B throw new Exception(); %7D catch (Exception e) %7B e.printStackTrace(); %7D%0A    %7D%0A%0A    public static void printStackTrace(String msg) %7B%0A        try %7B throw new Exception(msg); %7D catch (Exception e) %7B e.printStackTrace(); %7D%0A    %7D%0A%0A%7D%0A

Add DevUtils with printStackTrace methods