The default caching implementation.
A hashmap is used.
author: Robert Burrell Donkin version: $Id: DefaultXMLBeanInfoRegistry.java 438373 2006-08-30 05:17:21Z bayard $
Get XMLBeanInfo from cache.
Parameters: forThisClass - the class for which to find a XMLBeanInfo cached XMLBeanInfo associated with given classor null if no XMLBeanInfo has been associated