[#if list?? && list?size>0]

[#list list as lv1]
• ${lv1.name} [#if lv1.children?? && lv1.children?size>0]
  [#list lv1.children as lv2]
  • ${lv2.name} [#if lv2.children?? && lv2.children?size>0]
    [#list lv2.children as lv3]
    • ${lv3.name}
    [/#list]
    [/#if]
  [/#list]
  [/#if]
[/#list]

[#else] [/#if]