@ DocumentNode (location: (1:0)-(11:0))
└── children: (2 items)
    ├── @ HTMLElementNode (location: (1:0)-(10:5))
    │   ├── open_tag:
    │   │   └── @ HTMLOpenTagNode (location: (1:0)-(1:4))
    │   │       ├── tag_opening: "<" (location: (1:0)-(1:1))
    │   │       ├── tag_name: "h1" (location: (1:1)-(1:3))
    │   │       ├── tag_closing: ">" (location: (1:3)-(1:4))
    │   │       ├── children: []
    │   │       └── is_void: false
    │   │
    │   ├── tag_name: "h1" (location: (1:1)-(1:3))
    │   ├── body: (3 items)
    │   │   ├── @ HTMLTextNode (location: (1:4)-(2:2))
    │   │   │   └── content: "\n  "
    │   │   │
    │   │   ├── @ ERBCaseMatchNode (location: (2:2)-(9:11))
    │   │   │   ├── tag_opening: "<%" (location: (2:2)-(2:4))
    │   │   │   ├── content: " case variable " (location: (2:4)-(2:19))
    │   │   │   ├── tag_closing: "%>" (location: (2:19)-(2:21))
    │   │   │   ├── children: (1 item)
    │   │   │   │   └── @ HTMLTextNode (location: (2:21)-(3:2))
    │   │   │   │       └── content: "\n  "
    │   │   │   │
    │   │   │   ├── conditions: (2 items)
    │   │   │   │   ├── @ ERBInNode (location: (3:2)-(3:19))
    │   │   │   │   │   ├── tag_opening: "<%" (location: (3:2)-(3:4))
    │   │   │   │   │   ├── content: " in [String] " (location: (3:4)-(3:17))
    │   │   │   │   │   ├── tag_closing: "%>" (location: (3:17)-(3:19))
    │   │   │   │   │   └── statements: (1 item)
    │   │   │   │   │       └── @ HTMLTextNode (location: (3:19)-(5:2))
    │   │   │   │   │           └── content: "\n    String\n  "
    │   │   │   │   │
    │   │   │   │   │
    │   │   │   │   └── @ ERBInNode (location: (5:2)-(5:20))
    │   │   │   │       ├── tag_opening: "<%" (location: (5:2)-(5:4))
    │   │   │   │       ├── content: " in [Integer] " (location: (5:4)-(5:18))
    │   │   │   │       ├── tag_closing: "%>" (location: (5:18)-(5:20))
    │   │   │   │       └── statements: (1 item)
    │   │   │   │           └── @ HTMLTextNode (location: (5:20)-(7:2))
    │   │   │   │               └── content: "\n    Integer\n  "
    │   │   │   │
    │   │   │   │
    │   │   │   ├── else_clause:
    │   │   │   │   └── @ ERBElseNode (location: (7:2)-(7:12))
    │   │   │   │       ├── tag_opening: "<%" (location: (7:2)-(7:4))
    │   │   │   │       ├── content: " else " (location: (7:4)-(7:10))
    │   │   │   │       ├── tag_closing: "%>" (location: (7:10)-(7:12))
    │   │   │   │       └── statements: (1 item)
    │   │   │   │           └── @ HTMLTextNode (location: (7:12)-(9:2))
    │   │   │   │               └── content: "\n    else\n  "
    │   │   │   │
    │   │   │   │
    │   │   │   └── end_node:
    │   │   │       └── @ ERBEndNode (location: (9:2)-(9:11))
    │   │   │           ├── tag_opening: "<%" (location: (9:2)-(9:4))
    │   │   │           ├── content: " end " (location: (9:4)-(9:9))
    │   │   │           └── tag_closing: "%>" (location: (9:9)-(9:11))
    │   │   │
    │   │   │
    │   │   └── @ HTMLTextNode (location: (9:11)-(10:0))
    │   │       └── content: "\n"
    │   │
    │   ├── close_tag:
    │   │   └── @ HTMLCloseTagNode (location: (10:0)-(10:5))
    │   │       ├── tag_opening: "</" (location: (10:0)-(10:2))
    │   │       ├── tag_name: "h1" (location: (10:2)-(10:4))
    │   │       └── tag_closing: ">" (location: (10:4)-(10:5))
    │   │
    │   └── is_void: false
    │
    └── @ HTMLTextNode (location: (10:5)-(11:0))
        └── content: "\n"