Menu Link
Define an iterative menu strructure.
Supports nested
Typedefinitions.
Options
link: The DOM selector for the link attribute. text: The DOM selector for link text. 
Usage
field: main_menu
name: health_main_menu
type: menu_link
selector: '//*[@class="header-nav"]/*/ul/li'
options:
  text: './a'
  link: './a/@href'
  remove_duplicates: true
children:
  -
    type: menu_link
    selector: './descendant::li[@class="dd-level2"]'
    options:
      text: './a/h3'
      link: './a/@href'