title: How to get all nested content from IContent?
body: <p>Is there any way to get all the nested media files from the <em>IContent</em> object? I've attached to <em>publishing content</em> event and I want to know when any of the <em>MediaType</em> is being published. For instance, we may have a page, containing blocks with <em>ContentArea</em> and assets. How can I get all children content?</p>