title: how can remove auto generated <jsonObject> from the json to xml converter
body: <p>I am working on POC. I send json request<code>{"a": "abc","test": "testing"}</code>
  and added property in WSO2ESB<code>&lt;property name="messageType" value="text/xml" scope="axis2"/&gt;</code></p>
  
  <p>It will auto generate the POX but added <code>&lt;jsonObject&gt;</code>.like that <code>&lt;jsonObject&gt;&lt;a&gt;&lt;test&gt;&lt;/test&gt;&lt;/a&gt;&lt;/jsonObject&gt;</code>
  I want to generate pox without <code>&lt;jsonObject&gt;</code> .like that <code>&lt;a&gt;&lt;test&gt;&lt;/test&gt;</code></p>