Extjs custom component which extend Ext.Component conflicts method name in both.

I have a Ext.ux.ManagedIframe.Component class which extends Ext.Component.I am trying to build this with Sencha CMD 5.1.0.26. I have added this ManagedIframe class in app.json. But, seems like method name conflicts happening for getContentTarget() method. As, I don't want to changes the name of method in ManagedIframe.js file as It's used at several places.

Here is the log, while running sencha app build from project root folder.



== Unhandled Error ==

Ext.ux.ManagedIframe.Component: Public method "getContentTarget" conflicts with private framework method declared by Ext.Component

file:///C:/Softwares/tomcat/webapps/ROOT/Teamworks/Teamworks/ManagedIframe.js:342

file:///C:/Softwares/tomcat/webapps/ROOT/Teamworks/Teamworks/ManagedIframe.js:1547

[ERR] BUILD FAILED

[ERR] com.sencha.exceptions.ExProcess: phantomjs process exited with code 2

Extjs custom component which extend Ext.Component conflicts method name in both.