@Override
        public void call(SourceUnit source) {
            if (!source.getAST().getMethods().isEmpty()) {
                hasMethods = true;
            }
            emptyScript = isEmpty(source);
        }

        private boolean isEmpty(SourceUnit source) {
            List<Statement> statements = source.getAST().getStatementBlock().getStatements();

        }
    }

    private static boolean isNotEmpty(TestFilterSpec filter) {
        return !filter.getIncludedTests().isEmpty()
            || !filter.getIncludedTestsCommandLine().isEmpty()
            || !filter.getExcludedTests().isEmpty();
    }

    private static class ClassMethodNameFilter implements PostDiscoveryFilter {
        private final TestSelectionMatcher matcher;

     */
    public boolean isEmpty() {
        return (includes == null || includes.isEmpty())
            && (excludes == null || excludes.isEmpty())
            && (includeSpecs == null || includeSpecs.isEmpty())
            && (excludeSpecs == null || excludeSpecs.isEmpty());
    }

    public Spec<FileTreeElement> getAsSpec() {

        Set<Object> mutableValues = getMutableValues();
        if (mutableValues.isEmpty() && immutableValues.isEmpty()) {
            return;
        }
        final Deque<Object> queue = new ArrayDeque<Object>(mutableValues.size() + immutableValues.size());
        queue.addAll(immutableValues);
        queue.addAll(mutableValues);
        while (!queue.isEmpty()) {
            Object dependency = queue.removeFirst();

                    if (arList.isEmpty()) {
                        emptyListCount++;
                    } else {
                        emptyListCount = 0; // reset
                    }
                    long hitCount = ((EsResultList<EsAccessResult>) arList).getTotalHits();
                    while (hitCount > 0) {
                        if (arList.isEmpty()) {

                    while (prefixStack.size() > depth) {
                        prefixStack.removeLast();
                    }
                    if (node.children.isEmpty()) {
                        String root;
                        if (prefixStack.isEmpty()) {
                            root = node.prefix;
                        } else {
                            StringBuilder builder = new StringBuilder();

            }
        }

        TestFilterSpec filter = spec.getFilter();
        if (!filter.getIncludedTests().isEmpty() || !filter.getIncludedTestsCommandLine().isEmpty() || !filter.getExcludedTests().isEmpty()) {
            testNg.addListener(new SelectedTestsFilter(filter));
        }

        if (!suiteFiles.isEmpty()) {
            testNg.setTestSuites(GFileUtils.toPaths(suiteFiles));
        } else {

    assertThat(multiset).isEmpty();
  }

  public void testRemoveOccurrencesIterableEmpty() {
    Multiset<String> multiset = HashMultiset.create();
    Iterable<String> toRemove = Arrays.asList("a", "b", "a");
    assertFalse(Multisets.removeOccurrences(multiset, toRemove));
    assertTrue(multiset.isEmpty());
  }

  public void testRemoveOccurrencesMultisetEmpty() {

            }
        }

        private boolean hasFailures() {
            return !resolveFailures.isEmpty() || !provisioningFailures.isEmpty();
        }

        private String failureMessage() {
            StringBuilder sb = new StringBuilder();
            if (!resolveFailures.isEmpty()) {
                sb.append("Some toolchain resolvers had internal failures: ")

     * @throws EmptyArgumentException
     *             引数が<code>null</code>または空文字列の場合。
     */
    public static void assertArgumentNotEmpty(final String argName, final String argValue) {
        if (StringUtil.isEmpty(argValue)) {
            throw new EmptyArgumentException(argName, "ECL0010", asArray(argName));
        }
    }

    /**
     * 引数が<code>null</code>でも空文字列でもないことを表明します。
     *
     * @param argName