} catch (final ExecutionException e) {
            logger.warn("Failed to load popular words.", e);
        }
        return Collections.emptyList();
    }

    public void clearCache() {
        cache.invalidateAll();
    }

    protected String getCacheKey(final String seed, final String[] tags, final String[] roles, final String[] fields,
            final String[] excludes) {

    private static void dropVirtualFileSystemIfRequested(InternalOptions options, BuildLifecycleAwareVirtualFileSystem virtualFileSystem) {
        if (VirtualFileSystemServices.isDropVfs(options)) {
            virtualFileSystem.invalidateAll();
        }
    }

        }

        if (!warnings.isEmpty()) {
            LOGGER.info("Invalidating VFS because {} failed validation", work.getDisplayName());
            virtualFileSystem.invalidateAll();
        }

        return delegate.execute(work, new ValidationFinishedContext(context, warnings));
    }

            convertToSingleLine(renderMinimalInformationAbout(warnings.first(), false, false)) == expectedWarning
        })
        1 * virtualFileSystem.invalidateAll()

        then:
        1 * delegate.execute(work, { ValidationFinishedContext context ->
            convertToSingleLine(renderMinimalInformationAbout(context.validationProblems.first(), false, false)) == expectedWarning