[xwiki-users] Is there a simple way to create a document tree default expand to 3 levels?

Is there a simple way to create a document tree default expand to 3 levels? For example: * Level 1 ** Level 2 *** Level 3 *** Level 3 ** Level 2 *** Level 3 ** Level 2 *** Level 3 And, DO NOT use "see more" button to hide items. DocumentTree macro seems do not work for this situation.