protected void checkEsInvalidAggregation(String name, Object value) {
        if (value == null || (value instanceof String && ((String) value).isEmpty())) {
            String msg = "Cannot register null or empty aggregation: name=" + name + " value=" + value;
            throw new InvalidQueryRegisteredException(msg);
        }
    }

    protected void checkEsInvalidAggregationCollection(String name, Collection<?> values) {

    protected void checkEsInvalidAggregation(String name, Object value) {
        if (value == null || (value instanceof String && ((String) value).isEmpty())) {
            String msg = "Cannot register null or empty aggregation: name=" + name + " value=" + value;
            throw new InvalidQueryRegisteredException(msg);
        }
    }

    protected void checkEsInvalidAggregationCollection(String name, Collection<?> values) {

    // ================
    abstract protected String getNamePrefix();

    abstract protected String getApiPath();

    abstract protected String getKeyProperty();

    abstract protected String getListEndpointSuffix();

    abstract protected String getItemEndpointSuffix();

    abstract protected Map<String, Object> createTestParam(int id);

    abstract protected Map<String, Object> getUpdateMap();

    // ================

pkg testing, method (*B) Chdir(string) #62516
pkg testing, method (*F) Chdir(string) #62516
pkg testing, method (*T) Chdir(string) #62516

    @Override
    public String asTableDbName() {
        return asEsIndexType();
    }

    @Override
    protected String asEsIndex() {
        return "fess_config.file_config";
    }

    @Override
    public String asEsIndexType() {
        return "file_config";
    }

    @Override
    public String asEsSearchType() {
        return "file_config";
    }

            return;
        }
        ClassMetaData outerClass = classStack.isEmpty() ? null : getCurrentClass();
        String baseName = typeDeclaration.getNameAsString();
        String className = outerClass == null ? packageName + '.' + baseName : outerClass.getClassName() + '.' + baseName;
        String comment = getJavadocComment(typeDeclaration);

        <excludeScope implementation="java.lang.String" default-value="">${excludeScope}</excludeScope>
        <includeScope implementation="java.lang.String" default-value="runtime">${includeScope}</includeScope>
        <excludeGroupIds implementation="java.lang.String" default-value="">${excludeGroupIds}</excludeGroupIds>

	tests := []struct {
		input          string
		keys           []string
		expectedFields map[string]struct{}
	}{
		// No keys present
		{
			input:          "",
			keys:           []string{"comment"},
			expectedFields: map[string]struct{}{},
		},
		// No keys requested for tokenizing
		{
			input:          `comment="Hi this is my comment ="`,
			keys:           []string{},
			expectedFields: map[string]struct{}{},

    protected CrawlerContainer crawlerContainer;

    protected String urlPattern = "^(.*:/+)([^/]*)(.*)$";

    protected String includeFilteringPattern;

    protected String excludeFilteringPattern;

    protected Set<String> cachedIncludeSet = new LinkedHashSet<>();

    protected Set<String> cachedExcludeSet = new LinkedHashSet<>();

    protected String sessionId;

    protected UrlFilterService urlFilterService;

  public void testToArrayEmpty() {
    Iterator<String> iterator = Collections.<String>emptyList().iterator();
    String[] array = Iterators.toArray(iterator, String.class);
    assertTrue(Arrays.equals(new String[0], array));
  }

  @GwtIncompatible // Iterators.toArray(Iterator, Class)
  public void testToArraySingleton() {
    Iterator<String> iterator = singletonList("a").iterator();