### Question:
IdUtils { public static String uniqueId() { return UUID.uuid(); }  static String getPrefixedId(final String prefixId,
                                       final String rawId); static String getRawId(final String prefixedId); static String getComposedId(final String... parts); static String getShapeId(final JSIDMNDiagram diagram,
                                    final List<String> dmnElementIds,
                                    final String dmnElementId); static String getEdgeId(final JSIDMNDiagram diagram,
                                   final List<String> dmnElementIds,
                                   final String dmnElementId); static String uniqueId();  }### Answer:
@Test public void testUniqueId() { assertNotEquals(uniqueId(), uniqueId()); }