}

        @Override
        public ImmutableList<File> getFiles() {
            return files;
        }

        @Override
        public ComponentIdentifier getInitialComponentIdentifier() {
            return previous.getInitialComponentIdentifier();
        }

        @Override
        public String getDisplayName() {
            return previous.getDisplayName();
        }

        @Override

    }

    @Nullable
    private ProjectInternal determineProducerProject(TransformStepSubject subject) {
        ComponentIdentifier componentIdentifier = subject.getInitialComponentIdentifier();
        if (componentIdentifier instanceof ProjectComponentIdentifier) {
            return projectStateRegistry.stateFor((ProjectComponentIdentifier) componentIdentifier).getMutableModel();
        } else {