### Question:
XSLTHelper { public static String escape(String value) { return escape(value, false); } XSLTHelper(); static String formatTime(String iso8601); static String quoteForPython(String value); static String quoteEOLEscapedStringForPython(String value); static String quoteForClojure(String value); static String quoteEOLEscapedStringForClojure(String value); static String summariseAsLine(String value, int maximumCharacters); static String escape(String value); static String indent(); static String newLine(); static String newLineAndIndent(); static String changeIndent(int indentChange); static String resetIndent(); static String base64ToPython(String base64String); static String base64ToClojure(String base64String); static void setIndentString(String indentString);  }### Answer:
@Test public void testEscape() throws Exception { assertEquals("", XSLTHelper.escape("")); assertEquals("\\'", XSLTHelper.escape("'")); assertEquals("\\\"", XSLTHelper.escape("\"")); assertEquals("\\\\", XSLTHelper.escape("\\")); assertEquals("Hello \\'quoted\\\" \\\\world", XSLTHelper.escape("Hello 'quoted\" \\world")); }