@Test
  public void testGetSession1() {
    doFilter();
    HttpSession session1 = ((HttpServletRequest) getFilteredRequest()).getSession();
    HttpSession session2 = ((HttpServletRequest) getFilteredRequest()).getSession();

    assertSame("Session should be the same", session1, session2);
  }
This servlet tests the effects of the downstream SessionCachingFilter filter. When these tests
are performed, the filter would already have taken effect.
extensions/geode-modules-session/src/integrationTest/java/org/apache/geode/modules/session/internal/filter/CommonTests.java