How to render protected element? I want to print [entityInfo:protected] present in below image. 

I am able to print all element except [entityInfo:protected] and [entityType:protected]
You can't (without reflection). Protected members of a class are available only to the defining class and its subclasses - it's the whole point of using access modifiers in the first place - if you can get access to a protected value directly from the object, then the language has failed. Miserably.

If a method doesn't exist to expose that data already, you'll need to extend the class that represents that object to provide getter methods for the protected properties.