TemplateContextType contextType= fContextTypeRegistry.getContextType(getContextId(fContextCombo.getText()));
TemplateContextType contextType= fContextTypeRegistry.getContextType(getContextId());
	protected void doSourceChanged(IDocument document) {		String text= document.get();		fValidationStatus.setOK();		TemplateContextType contextType= fContextTypeRegistry.getContextType(getContextId(fContextCombo.getText()));		if (contextType != null) {			try {				contextType.validate(text);			} catch (TemplateException e) {				fValidationStatus.setError(e.getLocalizedMessage());			}		}		updateUndoAction();		updateButtons();	}	