Assert a Canvas page with the given title exists, or does not, in the authoring API's page list.
Examples
Then the "Home" Canvas page should exist
And the "Landing" Canvas page should exist
Then the "Old landing" Canvas page should not exist
And the "Pricing" Canvas page should not exist
Then the "Team" Canvas page should exist
Pattern
Then(/^the "([^"]*)" Canvas page should( not)* exist$/, …)
Part of @webship-js/drupal-cms-steps (github.com/webship/drupal-cms-steps), a step pack for Webship-js 2.0.x.