http://mzw.jp/yuta/research/peta/results/aef3559/promising/commons-collections/d73ff41fa177ac154aa01c67ee80411c68696790/org.apache.commons.collections4.iterators.FilterIteratorTest%23testRepeatedNext.html
http://mzw.jp/yuta/research/peta/results/aef3559/promising/commons-collections/d73ff41fa177ac154aa01c67ee80411c68696790/org.apache.commons.collections4.iterators.IteratorIterableTest%23testIterator.html