Information about the Resource to which the given Agent may have been granted access.
Access Modes granted to the public in general for the Resource, or null
if it could not be determined (e.g. because the current user does not have Control Access to a given Resource or its Container).
Returns the Access Modes granted to the public in general for a Resource.
This function does not return Access Modes granted to specific Agents through other ACL (Access Control List) rules, e.g., agent- or group-specific permissions.