dom deferredtextimpl textimpl deferrednode serialversionuid l fnodeindex deferredtextimpl deferreddocumentimpl ownerdocument nodeindex ownerdocument fnodeindex nodeindex needssyncdata getnodeindex fnodeindex synchronizedata needssyncdata deferreddocumentimpl ownerdocument deferreddocumentimpl this.ownerdocument data ownerdocument.getnodevaluestring fnodeindex isignorablewhitespace ownerdocument.getnodeextra fnodeindex