HST Component Invoker had better log the location of invoked component even at WARN or higher level

Currently, HST Component Invoker component leaves logs like the following when an invoked component throws an exception:

04.08.2011 20:16:25 WARN [org.hippoecm.hst.core.container.HstComponentInvokerImpl.invokeBeforeRender():156] Component exception caught on window results with component com.onehippo.gogreen.components.products.Overview: java.lang.NullPointerException

I think it would be better if the logging shows where the NPE happens in the component class, instead of the logging location of HSTComponentInvokerImpl.