@Override
    public void onFilterChange(final String filter) {
        if (dataSupplier != null) {
            dataSupplier.onChange(filter, values -> {
                if (values != null) {
                    cellTable.setRowData(0, values);
                    cellTable.setRowCount(values.size());
                }
            });
        }
    }
Sets the function to provide a display value for value T.
stroom-core-client/src/main/java/stroom/annotation/client/MultiChooserPresenter.java