caseFolding: If TRUE, XML attribute and element names
will be case-folded.
caseFoldingTo: May be either CASE_UPPER or CASE_LOWER
and sets the target case for the case-folding.
debug: May be either TRUE or FALSE, thus enabling or
disabling complete debugging information. May also be an array
containing the names of elements to which the generated
debugging information shall be limited. The special keywords
"&CDATA" and "&RECURSE" may be used to enable debugging
information for CDATA and recursion events.
recursiveOperation: If TRUE, the transformation will
continue recursively until the XML contains no more overloaded
elements. Can be overrided on a per-element basis.
overloadedElements: Associative array with pre-defined
set of overloaded elements.
overloadedNamespaces: Associative array with pre-defined
set of overloaded elements.
