@Override public byte process(Target target){
  Element syllable=navigator.getElement(target);
  if (syllable == null)   return 0;
  String accent=syllable.getAttribute("accent");
  if (accent.equals("")) {
    return 0;
  }
  return values.get(accent);
}

@ Override public byte process ( Target target ) { Element syllable = navigator . getElement ( target ) ; if ( syllable == null ) return 0 ; String accent = syllable . getAttribute ( "accent" ) ; if ( accent . equals ( "" ) ) { return 0 ; } return values . get ( accent ) ; }
for the given syllable item , return its tobi accent , or 0 if there is none .
