### Question:
AAAFilterChain implements FilterChain { public static AAAFilterChain createAAAFilterChain() { return new AAAFilterChain(); } private  AAAFilterChain(); static AAAFilterChain createAAAFilterChain(); @Override void doFilter(final ServletRequest request, final ServletResponse response); void doFilter(final ServletRequest request, final ServletResponse response,
            final FilterChain newExistingFilterChain, final List<Filter> injectedFilterChain);  }### Answer:
@Test public void testCreateAAAFilterChain() throws Exception { final AAAFilterChain aaaFilterChain = AAAFilterChain.createAAAFilterChain(); assertNotNull(aaaFilterChain); }