EndRobotsTxt: After the default robots.txt page (good place for customization)
- &$action: RobotstxtAction being shown
-GetProfileUri: When determining the canonical URI for a given profile
-- &$profile: the current profile
+StartGetProfileUri: When determining the canonical URI for a given profile
+- $profile: the current profile
+- &$uri: the URI
+EndGetProfileUri: After determining the canonical URI for a given profile
+- $profile: the current profile
+- &$uri: the URI