### Question:
FilteringZipDependencySelector implements DependencySelector { @Override public DependencySelector deriveChildSelector( DependencyCollectionContext dependencyCollectionContext) { return this; }  @Override boolean selectDependency(Dependency dependency); @Override DependencySelector deriveChildSelector(
      DependencyCollectionContext dependencyCollectionContext);  }### Answer:
@Test public void testDeriveChildSelector() { DependencySelector derivedSelector = selector.deriveChildSelector(null); assertSame(selector, derivedSelector); }