@Nonnull
    private CachingResult skipExecutionWithEmptySources(UnitOfWork work, C context) {
        CachingResult result = performSkip(work, context);
        broadcastWorkInputs(work, true);
        return result;
    }

    abstract protected CachingResult performSkip(UnitOfWork work, C context);

    private CachingResult executeWithNonEmptySources(UnitOfWork work, C context) {

        return context.getPreviousExecutionState()
            .map(ExecutionInputState::getInputFileProperties)
            .orElse(ImmutableSortedMap.of());
    }

    @Override
    protected CachingResult performSkip(UnitOfWork work, PreviousExecutionContext context) {
        ImmutableSortedMap<String, FileSystemSnapshot> outputFilesAfterPreviousExecution = context.getPreviousExecutionState()