Escaping widget content

Hi,

I’m trying to fix all errors that are flagged by the PCP.

My widgets code is flagged becasue I did not escape before/after widget and before/after title:

echo $args['before_widget']; // example: <aside class="widget">
echo $args['before_title']; // example: <h3 class="widget-title">   
echo $args['after_title']; // example: </h3>
echo $args['after_widget']; // example: </aside>

So I have now fixed it with wp_kses(). This is the only function I could find respecting the HTML markup of those tags:

echo wp_kses( $args['before_widget'], 'post' );
echo wp_kses( $args['before_title'], 'post' );
echo wp_kses( $args['after_title'], 'post' );
echo wp_kses( $args['after_widget'], 'post' );

I wonder why this is best approach or not?