Does 'managed file' type form api support the properties #prefix and #sufix? Does managed file type in drupal 7 form api work with #prefix and *#sufix * properties?

$form['myfilefield'] = array(
            '#title' =&gt; t('Image'),
            '#type' =&gt; 'managed_file',
            '#title_display' =&gt; 'invisible',
            '#id'=&gt;'edit-image-example-image-fid',
            '#prefix' =&gt; '&lt;div class="myDiv"&gt;',
            '#sufix' =&gt; '&lt;/div&gt;',
            '#default_value' =&gt; variable_get('myfilefield', ''),
            '#upload_location' =&gt; 'public://myimages/',
);
Yea..all though drupal 7 form api for managed_file shows #prefix/#suffix is supported, it did not work for me either. 
So I tried using #field_prefix and #field_suffix and it worked. :) 
I know this is a old post but I am posting answer hoping it will help someone. :->