@ ProgramNode (location: (1,0)-(1,8))
├── flags: ∅
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(1,8))
    ├── flags: ∅
    └── body: (length: 1)
        └── @ SourceFileNode (location: (1,0)-(1,8))
            ├── flags: newline
            └── filepath: "whitequark/string___FILE__.txt"
