public void test_getTypes() {
        String[] types = fileTypeHelper.getTypes();
        assertNotNull(types);
        assertEquals(0, types.length);

        fileTypeHelper.add("application/pdf", "pdf");
        fileTypeHelper.add("text/plain", "text");
        fileTypeHelper.add("image/jpeg", "image");

        types = fileTypeHelper.getTypes();
        assertEquals(3, types.length);

        Arrays.sort(types);

    reserialize(TypeToken.of(String.class).getTypes());
    reserialize(TypeToken.of(String.class).getTypes().classes());
    reserialize(TypeToken.of(String.class).getTypes().interfaces());
    reserialize(TypeToken.of(String.class).getTypes().rawTypes());
    reserialize(TypeToken.of(String.class).getTypes().classes().rawTypes());
    reserialize(TypeToken.of(String.class).getTypes().interfaces().rawTypes());

    reserialize(TypeToken.of(String.class).getTypes());
    reserialize(TypeToken.of(String.class).getTypes().classes());
    reserialize(TypeToken.of(String.class).getTypes().interfaces());
    reserialize(TypeToken.of(String.class).getTypes().rawTypes());
    reserialize(TypeToken.of(String.class).getTypes().classes().rawTypes());
    reserialize(TypeToken.of(String.class).getTypes().interfaces().rawTypes());

            final ResourceBundle resources = ResourceBundle.getBundle("fess_label", Locale.ENGLISH);
            final String[] fileTypes = ComponentUtil.getFileTypeHelper().getTypes();
            for (final String fileType : fileTypes) {
                final String value = filetypeField + ":" + fileType;
                if (!values.contains(value)) {

 * {@code Type}, for example {@link #isSubtypeOf}, {@link #isArray} and {@link #getComponentType}.
 * It also provides additional utilities such as {@link #getTypes}, {@link #resolveType}, etc.
 *
 * <p>There are three ways to get a {@code TypeToken} instance:
 *
 * <ul>
 *   <li>Wrap a {@code Type} obtained via reflection. For example: {@code

        }
    }

    private static class TestFileTypeHelper extends FileTypeHelper {
        private String[] types = new String[0];

        @Override
        public String[] getTypes() {
            return types;
        }

        public void setTypes(String[] types) {
            this.types = types;
        }
    }