public void reset(final String initialNameFilter) {
//        GWT.log("reset with initialQuickFilter: " + initialNameFilter);
        explorerTreeFilterBuilder.setNameFilter(initialNameFilter);
        explorerTree.setData(new ArrayList<>());
        openItems.clear();
        minDepth = 1;
        ensureVisible = null;
    }
For use when setting an initial value for the filter.
stroom-core-client/src/main/java/stroom/explorer/client/presenter/ExplorerTreeModel.java