return this;
    }

    /**
     * Specifies the prefix.
     * <p>
     * When a prefix is specified, only properties whose names start with the prefix will be included in the copy operation.
     * Additionally, the prefix will be removed from the source property name to form the destination property name.
     * </p>
     *
     * @param prefix
     *            The prefix. Must not be {@literal null} or an empty string.

        assertEquals(2, ruleManager.getGetRuleCallCount());

        ruleManager.getRule(null);
        assertEquals(3, ruleManager.getGetRuleCallCount());
    }

    /**
     * Test concurrent rule additions
     */
    public void test_concurrentAddRule() throws Exception {
        final ThreadSafeRuleManager threadSafeManager = new ThreadSafeRuleManager();
        final int threadCount = 10;

        assertFalse(urlFilter.match("javascript:alert('test')"));
        assertFalse(urlFilter.match("mailto:******@****.***"));
    }

    /**
     * Test concurrent pattern additions
     */
    public void test_concurrentPatternAdditions() throws InterruptedException {
        String sessionId = "test-session-023";
        urlFilter.init(sessionId);

labels.suggest_word_type_all=Tudo
labels.suggest_word_type_document=Documento
labels.suggest_word_type_query=Termo de pesquisa
labels.elevate_word_configuration=Palavra adicional
labels.elevate_word_title_details=Palavra adicional
labels.elevate_word_link_list=Lista
labels.elevate_word_link_create=Criar novo
labels.elevate_word_link_edit=Editar
labels.elevate_word_link_delete=Excluir

labels.suggest_word_type_all=Todo
labels.suggest_word_type_document=Documento
labels.suggest_word_type_query=Término de búsqueda
labels.elevate_word_configuration=Palabra adicional
labels.elevate_word_title_details=Palabra adicional
labels.elevate_word_link_list=Lista
labels.elevate_word_link_create=Crear nuevo
labels.elevate_word_link_edit=Editar
labels.elevate_word_link_delete=Eliminar

$close-text-shadow;\n  opacity: .5;\n\n  // Override <a>'s hover style\n  @include hover() {\n    color: $close-color;\n    text-decoration: none;\n  }\n\n  &:not(:disabled):not(.disabled) {\n    @include hover-focus() {\n      opacity: .75;\n    }\n  }\n}\n\n// Additional properties for button version\n// iOS requires the button element instead of an anchor tag.\n// If you want the anchor version, it requires `href=\"#\"`.\n// See https://developer.mozilla.org/en-US/docs/Web/Events/click#Safari_Mobile\n\n// styl...

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--#{$prefix}form-check-bg-image: #{escape-svg($form-check-input-indeterminate-bg-image)};\n    }\n  }\n\n  &:disabled {\n    pointer-events: none;\n    filter: none;\n    opacity: $form-check-input-disabled-opacity;\n  }\n\n  // Use disabled attribute in addition of :disabled pseudo-class\n  // See: https://github.com/twbs/bootstrap/issues/28247\n  &[disabled],\n  &:disabled {\n    ~ .form-check-label {\n      cursor: default;\n      opacity: $form-check-label-disabled-opacity;\n    }\n  }\n}\n\n.form-check-label...