@interface RLMRealmPermission : RLMObject
A singleton object which describes Realm-wide permissions.
An object of this type is automatically created in the Realm for you, and more objects
cannot be created manually. Call
+[RLMRealmPermission objectInRealm:] to obtain the
instance for a specific Realm.
RLMRealmPrivileges for the meaning of permissions applied to a Realm.