RangeExtension implements CustomTagExtension<RangeExtension.RangeTag> { public String getTagName() { return "range"; }  Class<RangeTag> getTagActionClass(); String getTagName(); String getTagNameSpace(); List<Map<String, String>> pipelinePossibleStates(RangeTag action,
                                                            List<Map<String, String>> possibleStateList);  }
@Test public void tagNameTest() { RangeExtension rangeExtension = new RangeExtension(); Assert.assertEquals("range", rangeExtension.getTagName()); }