### Question:
IncludeDesignLibrariesTag extends TagSupport { @Override public void release() { reset(); super.release(); }  @Override int doEndTag(); @Override void release(); void setCss(boolean css); void setDesign(Design design); void setJs(boolean js); void setRegion(String region);  }### Answer:
@Test public void testRelease() throws Exception { tag.setJs(true); tag.release(); tag.setRegion("head"); tag.doEndTag(); verifyNoMoreInteractions(dhlm); }