List instead of Multi Selector

example-15-as-a-list.json

{
  "scope": "https://textbook.example.org/",
  "type": "List",
  "items": [
    {
      "source": "https://textbook.example.org/section2.html",
      "selector": {
        "type": "CssSelector",
        "value": "body>section:nth-of-type(3)"
      }
    },
    {
      "source": "https://textbook.example.org/section4.html",
      "selector": {
        "type": "CssSelector",
        "value": "body>section:nth-of-type(6)"
      }
    },
    {
      "source": "https://textbook.example.org/section7.html",
      "selector": {
        "type": "CssSelector",
        "value": "body>section:nth-of-type(8)"
      }
    }
  ]
}

multiselector-example-15.json

{
  "source": "https://textbook.example.org/",
  "selector": {
    "type": "MultiSelector",
    "selectors": [{
      "type" : "EmbeddedResourceSelector",
      "value": "https://textbook.example.org/section2.html",
      "refinedBy": {
        "type": "CssSelector",
        "value": "body>section:nth-of-type(3)"
      }
    },{
      "type": "EmbeddedResourceSelector",
      "value": "https://textbook.example.org/section4.html",
      "refinedBy": {
        "type": "CssSelector",
        "value": "body>section:nth-of-type(6)"
      }
    },{
      "type": "EmbeddedResourceSelector",
      "value": "https://textbook.example.org/section7.html",
      "refinedBy": {
        "type": "CssSelector",
        "value": "body>section:nth-of-type(8)"
      }
    }]
  }    
}