drools-eclipse/org.guvnor.tools/src/org/guvnor/tools/views/RepositoryContentProvider.java
public Object[] getElements(Object parent) {
        if (parent.equals(viewer)) {
            if (invisibleRoot == null) initialize();
            return getChildren(invisibleRoot);
        }
        return getChildren(parent);
    }
public Object[] getElements(Object parent) {
        if (parent.equals(viewer)) {
            if (invisibleRoot == null) initialize();
            return getChildren(invisibleRoot);
        }
        return getChildren(parent);
    }
/*
(non-Javadoc)
@see org.eclipse.jface.viewers.IStructuredContentProvider#getElements(java.lang.Object)