从wizard跳转到tree视图最简单的方法
<act_window context="{'search_default_server_id': active_id, 'default_fetchmail_server_id': active_id}" id="act_server_history" name="Messages" domain="[('email_from', '!=', False), ('fetchmail_server_id', '=', active_id)]" res_model="mail.mail" src_model="fetchmail.server"/>