Xerces 3.1.1

## Package org.w3c.dom.traversal

Interface Summary
DocumentTraversal: `DocumentTraversal` contains methods that create iterators and tree-walkers to traverse a node and its children in document order (depth first, pre-order traversal, which is equivalent to the order in which the start tags occur in the text representation of the document).
NodeFilter: Filters are objects that know how to "filter out" nodes.
NodeIterator: `Iterators` are used to step through a set of nodes, e.g.
TreeWalker: `TreeWalker` objects are used to navigate a document tree or subtree using the view of the document defined by their `whatToShow` flags and filter (if any).

Xerces 3.1.1