### Question:
ZipkinRequestUUIDImpl implements ZipkinRequestUUID { @Override public String getUUID() { return cougarUuid.getUUID(); } ZipkinRequestUUIDImpl(@Nonnull RequestUUID cougarUuid);  ZipkinRequestUUIDImpl(@Nonnull RequestUUID cougarUuid, @Nullable ZipkinDataBuilder zipkinDataBuilder); @Override String getRootUUIDComponent(); @Override String getParentUUIDComponent(); @Override String getLocalUUIDComponent(); @Override @Nonnull RequestUUID getNewSubUUID(); @Override @Nonnull ZipkinData getZipkinData(); @Override boolean isZipkinTracingEnabled(); @Override boolean isZipkinTracingReady(); @Override ZipkinData buildZipkinData(@Nonnull String spanName); @Override String getUUID(); @Override String toCougarLogString(); @Override String toString();  }### Answer:
@Test public void getUUID_ShouldDeferToCougarGetUUID() { String cougarUUID = "abcde-1234-fghij-5678-klmno"; when(cougarUuid.getUUID()).thenReturn(cougarUUID); victim = new ZipkinRequestUUIDImpl(cougarUuid, null); assertEquals(cougarUUID, victim.getUUID()); }