### Question:
SecretsManager { public abstract void removeSecrets(String name);  static synchronized SecretsManager get(); abstract Secrets getSecrets(String name); abstract void removeSecrets(String name);  }### Answer:
@Test public void testRemoveSecrets() throws Exception { SecretsManager sm = SecretsManager.get(); Secrets s1 = sm.getSecrets("test1"); SecretKey secretKey = s1.getSecretKey(); System.out.println(secretKey.getAlgorithm()); sm.removeSecrets("test1"); s1 = sm.getSecrets("test1"); secretKey = s1.getSecretKey(); System.out.println(secretKey.getAlgorithm()); }