private void addEditButtonHandler() {
        registerHandler(editButton.addClickHandler(event -> {
            if (visibleRules != null) {
                final DataRetentionRule selected = listPresenter.getSelectionModel().getSelected();
                editRule(selected);
            }
        }));
    }
@return The rules created by the users, ignoring the default retain all rule
stroom-core-client/src/main/java/stroom/receive/rules/client/presenter/DataRetentionPolicyPresenter.java