### Question:
ExtKeyUsage extends KeyUsage { public static Map<String, KeyUsage> entries() { Map ret = new LinkedHashMap(TR31MAP); ret.putAll(MAP); return Collections.unmodifiableMap(ret); } protected  ExtKeyUsage(String code, String name); static KeyUsage valueOfByCode(String code); static Map<String, KeyUsage> entries(); final static KeyUsage DEK; final static KeyUsage ZEK; final static KeyUsage TEK; final static KeyUsage RSAPK; final static KeyUsage RSASK; final static KeyUsage RSASKICC; final static KeyUsage RSASKPIN; final static KeyUsage RSASKTLS; final static KeyUsage TMK; final static KeyUsage ZMK; final static KeyUsage HMACSHA1; final static KeyUsage HMACSHA224; final static KeyUsage HMACSHA256; final static KeyUsage HMACSHA384; final static KeyUsage HMACSHA512; final static KeyUsage TPK; final static KeyUsage ZPK; }### Answer:
@Test public void testEntries() { Map<String, KeyUsage> ret = ExtKeyUsage.entries(); assertTrue(ret.containsKey("D0")); assertTrue(ret.containsKey("K0")); assertTrue(ret.containsKey("M0")); assertTrue(ret.containsKey("V0")); assertTrue(ret.containsKey("12")); assertTrue(ret.containsKey("15")); assertTrue(ret.containsKey("17")); }