t,hasChildren,hasNext,hasNext,hasNext,hasNext,hasNext,hasSiblings,hashInt,hashString,inorder,insert,insert,insert,insertAfter,insertAfter,insertAfter,insertAfter,insertAfterChild,insertBefore,insertBefore,insertBeforeChild,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isEmpty,isLeaf,isLeft,isRight,isRoot,join,join,lastNodeOf,merge,merge,merge,next,next,next,next,next,nextChild,nodeOf,nodeOf,peek,peek,peek,peek,pop,pop,popDown,