getContentTarget" conflicts with private framework method declared by Ext.Component

I have a Ext.ux.ManagedIframe.Component class. I am using sencha cmd 5.1.0.26 to build my application. getting below error message. I don't want to change the getContentTarget() name in this class, Any suggestion is welcome. below is log.



== Unhandled Error ==

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

getContentTarget" conflicts with private framework method declared by Ext.Component