Houses all interfaces that subclasses can extend/implement. See: interfaces.Interface Interfaces Deferrable interfaces.Deferrable DepsCreatable interfaces.DepsCreatable IDCreatable interfaces.IDCreatable IDHierarchicalCreatable interfaces.IDHierarchicalCreatable IDHierarchicalNameCreatable interfaces.IDHierarchicalNameCreatable IDNameCreatable interfaces.IDNameCreatable Initializable interfaces.Initializable Interface interfaces.Interface