@ ProgramNode (location: (1,1)-(1,8))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,1)-(1,8))
    └── body: (length: 1)
        └── @ StringNode (location: (1,1)-(1,8))
            ├── flags: ∅
            ├── opening_loc: (1,1)-(1,8) = "<<-HERE"
            ├── content_loc: (2,0)-(3,0) = "\t\tcontent\n"
            ├── closing_loc: (3,0)-(4,0) = "\tHERE\n"
            └── unescaped: "\t\tcontent\n"