span><span class="special">(</span><span class="identifier">ignore_content_type</span><span class="special">);</span> <span class="special">});</span>
    <span class="special">}</span>

    <span class="comment">/// Extracts the body of the request message into a json value, checking that the content type is application/json.</span>
    <span class="comment">/// A body can only be extracted once because in some cases an optimization is made where the data is 'moved' out.</span>
    <span class="identifier"