ESHttpUtils { public static String yesNo(final boolean b) { if (b) { return "yes"; } return "no"; } private  ESHttpUtils(); @Nullable static String findContentText(final Node rootNode, final XPath xPath, final String expression); @Nullable static Integer findContentInteger(final Node rootNode, final XPath xPath,
            final String expression); @Nullable static Node findNode(@NotNull final Node rootNode, @NotNull final XPath xPath,
            @NotNull final String expression); @Nullable static NodeList findNodes(@NotNull final Node rootNode, @NotNull final XPath xPath,
            @NotNull final String expression); @NotNull static Document parseDocument(@NotNull final DocumentBuilder builder,
            @NotNull final InputStream inputStream); @NotNull static XPath createXPath(@Nullable final String... values); @NotNull static DocumentBuilder createDocumentBuilder(); static String yesNo(final boolean b);  }
@Test public void testYesNo() { assertThat(ESHttpUtils.yesNo(true)).isEqualTo("yes"); assertThat(ESHttpUtils.yesNo(false)).isEqualTo("no"); }