Bug 135088 [JFace] AbstractResourceManager.find() returns a RefCount instead of the created resource
M6 If you attempt to call find on an AbstractResourceManager subclass you will get back a RefCount object instead of the resource bound to the desired descriptor. RefCount is a private class that is unusable to clients of this API. This should be addressed for 3.2 to address the intention of the method description.
bundles/org.eclipse.jface/src/org/eclipse/jface/resource/AbstractResourceManager.java
/**
     * Map of ResourceDescriptor onto RefCount. (null when empty)
     */
    private HashMap map = null;
    
    /**
     * Holds a reference count for a previously-allocated resource
     */
    private static class RefCount {