return resolving(displayName, ProviderResolutionStrategy.REQUIRE_PRESENT, sources);
    }

    @Override
    public FileCollectionInternal resolvingLeniently(String displayName, Object sources) {
        return resolving(displayName, ProviderResolutionStrategy.ALLOW_ABSENT, sources);
    }

    private FileCollection resolveLeniently(PropertyValue value) {
        Object sources = value.call();
        return sources == null
            ? FileCollectionFactory.empty()
            : fileCollectionFactory.resolvingLeniently(sources);
    }

    private TestTaskFilters collectFilters(Test task) {
        DefaultTestFilter filter = (DefaultTestFilter) task.getFilter();
        TestFrameworkOptions options = task.getOptions();