PropertiesUtils { public static Object remove(String name, Map<String, String> properties) { return properties.remove(name); } private  PropertiesUtils(); static void setProperties(ContentStore contentStore,
                                     String spaceId,
                                     String contentId,
                                     Map<String, String> properties); static Map<String, String> getProperties(ContentStore contentStore,
                                                    String spaceId,
                                                    String contentId); static List<NameValuePair> convertExtendedProperties(Map<String, String> properties); static Object remove(String name, Map<String, String> properties); static Object add(String name,
                             String value,
                             Map<String, String> properties); static Object getValue(String key, Map<String, String> properties); static void handle(String method,
                              String context,
                              Map<String, String> properties,
                              HttpServletRequest request);  }
@Test public void testRemove() { assertNotNull(PropertiesUtils.remove("test-key", properties)); }