Expose page ID in integration environment

Currently, it doesn't appear that there is a way to retrieve the page ID through the integration environment. For instance, I'm creating an integration that will be added to several separate pages that include task lists for various procedures. When the user visits the page for a specific procedure and clicks the button on that page, we want to be able to create a task list in a ticket in our ticketing system, pulled from the task list on the GitBook page. However, I've searched all through the documentation and the properties exposed to the integration, and I'm not able to find any reference to the page ID. Support confirmed that this isn't currently possible and suggested I request it here.

Start by reviewing the integration environment and the properties currently exposed to integrations, then compare them with the integration documentation. The work is complete when an integration can retrieve the visited GitBook page ID and the supported property is documented for integration authors.