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