return true;
        }

        @Nullable
        @Override
        public Project getOwningProject() {
            if (artifact.fileSource.getResourceToLock() instanceof ProjectState) {
                return ((ProjectState) artifact.fileSource.getResourceToLock()).getMutableModel();
            } else {
                return null;
            }
        }

        @Override

     */
    void finalizeIfNotAlready();

    /**
     * Returns the resource that will be required to calculate this value.
     */
    ModelContainer<?> getResourceToLock();

        } else {
            // Value has already been calculated, so no longer needs project state
            return null;
        }
    }

    @Override
    public ModelContainer<?> getResourceToLock() {
        CalculationState<T, S> calculationState = this.calculationState;
        if (calculationState != null && calculationState.supplier.usesMutableProjectState()) {