public static JavadocTool make0(Context context) {
        Messager messager = null;
        try {
            // force the use of Javadoc's class reader
            JavadocClassReader.preRegister(context);

            // force the use of Javadoc's own enter phase
            JavadocEnter.preRegister(context);

            // force the use of Javadoc's own member enter phase
            JavadocMemberEnter.preRegister(context);

            // force the use of Javadoc's own todo phase
            JavadocTodo.preRegister(context);

            // force the use of Messager as a Log
            messager = Messager.instance0(context);

            // force the use of the scanner that captures Javadoc comments
            DocCommentScanner.Factory.preRegister(context);

            return new JavadocTool(context);
        } catch (CompletionFailure ex) {
            messager.error(Position.NOPOS, ex.getMessage());
            return null;
        }
    }