IPreferenceStore preferenceStore= getPreferenceStore();
IPreferenceStore preferenceStore= getNewPreferenceStore();
		public void install() {			ISourceViewer sourceViewer= getSourceViewer();			if (sourceViewer == null)				return;							StyledText text= sourceViewer.getTextWidget();						if (text == null || text.isDisposed())				return;							updateColor(sourceViewer);			sourceViewer.addTextInputListener(this);						IDocument document= sourceViewer.getDocument();			if (document != null)				document.addDocumentListener(this);						text.addKeyListener(this);			text.addMouseListener(this);			text.addMouseMoveListener(this);			text.addFocusListener(this);			text.addPaintListener(this);						((ITextViewerExtension4)sourceViewer).addTextPresentationListener(this);						updateKeyModifierMask();						IPreferenceStore preferenceStore= getPreferenceStore();			preferenceStore.addPropertyChangeListener(this);		}