@ ProgramNode (location: (1,0)-(1,9))
├── flags: ∅
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(1,9))
    ├── flags: ∅
    └── body: (length: 1)
        └── @ StringNode (location: (1,0)-(1,9))
            ├── flags: newline
            ├── opening_loc: (1,0)-(1,3) = "%q{"
            ├── content_loc: (1,3)-(1,8) = "a b c"
            ├── closing_loc: (1,8)-(1,9) = "}"
            └── unescaped: "a b c"
