public static HttpResultForm getInstance() {
        if (httpResultForm == null) {
            httpResultForm = new HttpResultForm();
            UndoUtil.register(httpResultForm);
        }
        return httpResultForm;
    }
<pre>
HttpResultForm
</pre>

@author <a href="https://github.com/rememberber">Zhou Bo</a>
@since 2019/7/19.
src/main/java/com/fangxuele/tool/push/ui/form/HttpResultForm.java