salesforce lightning console how close primary tab in aura component?

closeFocusedTab : function(component, event, helper) {
    var workspaceAPI = component.find("workspace");
    workspaceAPI.getEnclosingTabId().then(function(response) {
        var focusedTabId = response.tabId;
        workspaceAPI.closeTab({tabId: focusedTabId});
    })
    .catch(function(error) {
        console.log(error);
    });
}

I want to not only close the current tab,but also the parent(primary) tab,anyone can help? this method only close the current tab.