Check the request to add a shared object from external source (i.e.
remote container).
Parameters:
fromID - the ID of the container making the container add request
toID - the ID of the container receiving/handling the add request.
Null if directed to all containers in group.
localID - the ID of the local container
newObjectDescription - the ReplicaSharedObjectDescription associated with the shared
object being added
Returns:
PermissionCollection the permission collection associated with
successful acceptance of the add request. Null if the add should
be refused, Non-null if add request is accepted.
Throws:
SecurityException - if request should be refused and associated container
should leave group