How can i bind the different subtype of same type at runtime using google GUICE

[vinay krishna]

I have defined a superclass :

public abstract class DeliverableHelper

There are three classes which is extending DeliverableHelper :-

TestInstanceHelper,AssetHelper and TestElementHelper

I am using a factory class to resolve which class will be  called at 
runtime :-

below is the code of the factory class :-

 public DeliverableHelper getWorkflowHelper(DeliverableType 
deliverableType) throws DfException {
        DeliverableHelper  workflowClass = null;
        switch (deliverableType) {

        case TCP:
            workflowClass = new TestInstanceHelper();

            break;
        case TET:
            workflowClass = new TestElementHelper();
            break;
        case ASSET:
            workflowClass = new AssetHelper();
            break;
        default:
            throw new DfException("Deliverable type is not valid");

        }
        return workflowClass;
    }

How can i fit all these using google guice binding. 

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