Information about the Resource to which the given Group may have been granted access.
URL of the Group for which to retrieve what access it has to the Resource.
Access Modes that have been explicitly granted to the group for the given 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 a Group's explicity-granted Access Modes for a given Resource.
The function does not return Access Modes granted indirectly to the Group through other ACL rules, e.g., public permissions.