}

    public void test_getDesignJspFileName() {
        assertNull(systemHelper.getDesignJspFileName("xxx"));
        systemHelper.addDesignJspFileName("xxx", "yyy");
        assertEquals("yyy", systemHelper.getDesignJspFileName("xxx"));
        final Pair<String, String>[] designJspFileNames = systemHelper.getDesignJspFileNames();
        assertEquals(1, designJspFileNames.length);

            if (values.length != 2) {
                throwValidationError(messages -> messages.addErrorsInvalidDesignJspFileName(GLOBAL), this::asListHtml);
            }
            final String jspFileName = systemHelper.getDesignJspFileName(values[1]);
            if (jspFileName == null) {
                throwValidationError(messages -> messages.addErrorsInvalidDesignJspFileName(GLOBAL), this::asListHtml);
            }
            String path;

    }

    /**
     * Gets the design JSP file name for a given key.
     *
     * @param fileName The key for the JSP file.
     * @return The file name.
     */
    public String getDesignJspFileName(final String fileName) {
        return designJspFileNameMap.get(fileName);
    }

    /**
     * Gets an array of design JSP file names.
     *
     * @return An array of pairs of keys and file names.