String message= RefactoringCoreMessages.getFormattedString("NLSRefactoring.externalize_strings",
String message= NLSMessages.getFormattedString("NLSRefactoring.externalize_strings",
	private IChange createSourceModification() throws CoreException{		String message= RefactoringCoreMessages.getFormattedString("NLSRefactoring.externalize_strings", //$NON-NLS-1$							fCu.getElementName());		TextChange change= new CompilationUnitChange(message, fCu); 		for (int i= 0; i < fNlsSubs.length; i++){			addNLS(fNlsSubs[i], change);		}		if (willAddImportDeclaration())			addImportDeclaration(change);		return change;	}