document:
  nodes:
  - kind: block
    type: ul_list
    nodes:
    - kind: block
      type: list_item
      nodes:
      - kind: block
        type: paragraph
        nodes:
        - kind: text
          text: 'First item'

    - kind: block
      type: list_item
      nodes:
      - kind: block
        type: paragraph
        nodes:
        - kind: text
          text: 'Second item'
      - kind: block
        type: ul_list
        nodes:
        - kind: block
          type: list_item
          nodes:
          - kind: block
            type: paragraph
            nodes:
            - kind: text
              key: 'start'
              text: ''

selection:
  anchorKey: 'start'
  anchorOffset: 0
  focusKey: 'start'
  focusOffset: 0
  isFocused: true