### Question:
Certificate { public String getSignature() { return signature; } Certificate(final String signature, final String signaturecerturl, final String message);  Certificate(HttpServletRequest request); static boolean verify(ConcurrentHashMap<String, PublicKey> cache, Certificate certificate); static PublicKey getPublicKeyFromUrl(String signaturecerturl); String getSignature(); String getSignaturecerturl(); String getMessage();  }### Answer:
@Test public void testGetSignature() { fail("Not yet implemented"); }