3.org/TR/xpath#data-model for the definition of a node's string-value). Multiple calls to the ContentHandler's characters methods may well occur for a single call to this method.
@param nodeHandle The node ID.
@param ch A non-null reference to a ContentHandler.
@param normalize true if the content should be normalized according tothe rules for the XPath
normalize-space function.
@throws org.xml.sax.SAXException