if (fImplementations != null) {
if (fImplementations != null && fEnabled) {
	public String getHoverInfo(ITextViewer textViewer, IRegion hoverRegion) {		if (fImplementations != null) {			for (int i= 0; i < fImplementations.length; i++) {				String s= fImplementations[i].getHoverInfo(textViewer, hoverRegion);				if (s != null && s.trim().length() > 0)					return s;			}		}		return null;	}