### Question:
ObjectUtil { public static String getMethodIdentifier(Method method) { final StringBuilder sb = new StringBuilder(); sb.append(method.getName()); sb.append('('); int i = 0; for (final Class<?> clazz : method.getParameterTypes()) { if (i++ > 0) sb.append(','); sb.append(clazz); } sb.append(')'); return sb.toString(); }  static void requireNotNull(Object param, String message); static void requireNotEmpty(String param, String message); Map<String, String> getThreadContextMap(ThreadLocal<Map<String, String>> threadConfigurationContext); Map<String, Object> mergeConfigurations(Map<String, Object> firstMap, Map<String, Object> secondMap); static String getMethodIdentifier(Method method);  }### Answer:
@Test public void testGetMethodIdentifier() throws NoSuchMethodException { assertEquals("testGetMethodIdentifier()", ObjectUtil.getMethodIdentifier(ObjectUtilTest.class.getDeclaredMethod("testGetMethodIdentifier"))); assertEquals("testMethod1(class java.lang.String,int,class java.lang.Object)", ObjectUtil.getMethodIdentifier(ObjectUtilTest.class.getDeclaredMethod("testMethod1", String.class, int.class, Object.class))); }