@ DocumentNode (location: (1:0)-(1:20))
└── children: (1 item)
    └── @ HTMLElementNode (location: (1:0)-(1:20))
        ├── 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: (1 item)
        │   └── @ HTMLTextNode (location: (1:4)-(1:15))
        │       └── content: "Hello World"
        │
        ├── close_tag:
        │   └── @ HTMLCloseTagNode (location: (1:15)-(1:20))
        │       ├── tag_opening: "</" (location: (1:15)-(1:17))
        │       ├── tag_name: "h1" (location: (1:17)-(1:19))
        │       └── tag_closing: ">" (location: (1:19)-(1:20))
        │
        └── is_void: false