Assert the form offers (or does not offer) a vertical tab, by its title.
Examples
Then I should see the "Menu settings" vertical tab
Then I should not see the "Menu settings" vertical tab
And I should see the "URL settings" vertical tab
Then we should see the "Publishing options" vertical tab
And should not see the "Authoring information" vertical tab
Pattern
Then(/^(I |we )*should( not)* see the "([^"]*)" vertical tab$/, …)
Part of @webship-js/backdrop-cms-steps (github.com/webship/backdrop-cms-steps), a step pack for Webship-js 2.0.x.