<para>The <seecref="M:Gtk.Assistant.Prepare"/> event utilizes this delegate:</para>
<para>Event data is passed via the <seecref="T:Gtk.PrepareArgs"/> parameter.</para>
<para>To attach a <seecref="T:Gtk.PrepareHandler"/> to an event, add the PrepareHandler instance to the event. The methods referenced by the PrepareHandler instance are invoked whenever the event is raised, until the PrepareHandler is removed from the event.</para>