item-0 at level 0: GroupLabel.UNSPECIFIED: group _root_
  item-1 at level 1: GroupLabel.SECTION: group header-0
    item-2 at level 2: DocItemLabel.SECTION_HEADER: Test Document
      item-3 at level 3: DocItemLabel.PARAGRAPH: 
      item-4 at level 3: DocItemLabel.PARAGRAPH: 
      item-5 at level 3: DocItemLabel.PARAGRAPH: Paragraph 2.1.1
      item-6 at level 3: DocItemLabel.PARAGRAPH: 
      item-7 at level 3: DocItemLabel.PARAGRAPH: Paragraph 2.1.2
      item-8 at level 3: DocItemLabel.PARAGRAPH: 
      item-9 at level 3: GroupLabel.SECTION: group header-2
        item-10 at level 4: DocItemLabel.SECTION_HEADER: Test 1:
          item-11 at level 5: GroupLabel.LIST: group list
            item-12 at level 6: DocItemLabel.LIST_ITEM: List item 1
            item-13 at level 6: DocItemLabel.LIST_ITEM: List item 2
            item-14 at level 6: DocItemLabel.LIST_ITEM: List item 3
          item-15 at level 5: DocItemLabel.PARAGRAPH: 
        item-16 at level 4: DocItemLabel.SECTION_HEADER: Test 2:
          item-17 at level 5: GroupLabel.LIST: group list
            item-18 at level 6: DocItemLabel.LIST_ITEM: List item a
            item-19 at level 6: DocItemLabel.LIST_ITEM: List item b
            item-20 at level 6: DocItemLabel.LIST_ITEM: List item c
          item-21 at level 5: DocItemLabel.PARAGRAPH: 
        item-22 at level 4: DocItemLabel.SECTION_HEADER: Test 3:
          item-23 at level 5: GroupLabel.LIST: group list
            item-24 at level 6: DocItemLabel.LIST_ITEM: List item 1
            item-25 at level 6: DocItemLabel.LIST_ITEM: List item 2
            item-26 at level 6: GroupLabel.LIST: group list
              item-27 at level 7: DocItemLabel.LIST_ITEM: List item 1.1
              item-28 at level 7: DocItemLabel.LIST_ITEM: List item 1.2
              item-29 at level 7: DocItemLabel.LIST_ITEM: List item 1.3
            item-30 at level 6: DocItemLabel.LIST_ITEM: List item 3
          item-31 at level 5: DocItemLabel.PARAGRAPH: 
        item-32 at level 4: DocItemLabel.SECTION_HEADER: Test 4:
          item-33 at level 5: GroupLabel.LIST: group list
            item-34 at level 6: DocItemLabel.LIST_ITEM: List item 1
            item-35 at level 6: GroupLabel.LIST: group list
              item-36 at level 7: DocItemLabel.LIST_ITEM: List item 1.1
            item-37 at level 6: DocItemLabel.LIST_ITEM: List item 2
          item-38 at level 5: DocItemLabel.PARAGRAPH: 
        item-39 at level 4: DocItemLabel.SECTION_HEADER: Test 5:
          item-40 at level 5: GroupLabel.LIST: group list
            item-41 at level 6: DocItemLabel.LIST_ITEM: List item 1
            item-42 at level 6: GroupLabel.LIST: group list
              item-43 at level 7: DocItemLabel.LIST_ITEM: List item 1.1
              item-44 at level 7: GroupLabel.LIST: group list
                item-45 at level 8: DocItemLabel.LIST_ITEM: List item 1.1.1
            item-46 at level 6: DocItemLabel.LIST_ITEM: List item 3
          item-47 at level 5: DocItemLabel.PARAGRAPH: 
        item-48 at level 4: DocItemLabel.SECTION_HEADER: Test 6:
          item-49 at level 5: GroupLabel.LIST: group list
            item-50 at level 6: DocItemLabel.LIST_ITEM: List item 1
            item-51 at level 6: DocItemLabel.LIST_ITEM: List item 2
            item-52 at level 6: GroupLabel.LIST: group list
              item-53 at level 7: DocItemLabel.LIST_ITEM: List item 1.1
              item-54 at level 7: DocItemLabel.LIST_ITEM: List item 1.2
              item-55 at level 7: GroupLabel.LIST: group list
                item-56 at level 8: DocItemLabel.LIST_ITEM: List item 1.2.1
            item-57 at level 6: DocItemLabel.LIST_ITEM: List item 3
          item-58 at level 5: DocItemLabel.PARAGRAPH: 
          item-59 at level 5: DocItemLabel.PARAGRAPH: 
          item-60 at level 5: DocItemLabel.PARAGRAPH: