/** Test method for {@link tuwien.auto.calimero.cemi.CEMILDataEx#isExtendedFrame()}. */
 public final void testIsExtendedFrame() {
   assertFalse(f.isExtendedFrame());
   final CEMILDataEx f2 =
       new CEMILDataEx(
           CEMILData.MC_LDATA_REQ,
           src,
           dst,
           new byte[] {0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16},
           Priority.LOW);
   assertTrue(f2.isExtendedFrame());
 }