use map to lookup element numbers
add xml extractors
format source
set compiler source and target to 1.6
copy htmlvisitor code to TreeToHtmlConverter
move visitor logic to tree
refactor tree classes
generate html from tree
generate html from tree
change Traversor to SchemaTraversor and process method to traverse
remove HtmlVisitor
reformat, add comments
remove comment
extract xml
remove unused values
add choice xml extraction
put getXml1 before getXml2
extract xml
encode XML values
add isMultiple on node