Part of lp.app.interfaces.launchpad View In Hierarchy
Known subclasses: lp.blueprints.interfaces.sprint.ISprintPublic, lp.registry.interfaces.webservice.IDistributionSourcePackage, lp.registry.interfaces.webservice.IPerson, lp.registry.interfaces.webservice.IPillar
This is a marker to allow views to avoid duplicating header information in the body. The header is generated from IHeadingBreadcrumbs, so you also need to define one of those for each of these.