title: Adding Functions and packages to Device managemnt Core and common
body: <p>I created a package and org.wso2.carbon.device.mgt.core.log.mgt   created some functions in it.</p>
  
  <p>Added my new Build of Carbon Device core as a project dependency to 
  WSO2 MDM - Mobile Device Management Admin Services
  precisely the Operations Class
  Build the project and Deployed it.</p>
  
  <p>On loading it failed with Error being 
  Caused by: java.lang.IncompatibleClassChangeError: Implementing class</p>
  
  <p>Any Help will be greatly apreciated. My Goal
  Create functions in Carbon device Core and Common following your Design. Call the functions in my webservice</p>