@ ProgramNode (location: (1,0)-(5,4))
├── flags: ∅
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(5,4))
    ├── flags: ∅
    └── body: (length: 2)
        ├── @ SymbolNode (location: (1,0)-(2,6))
        │   ├── flags: newline, static_literal, forced_us_ascii_encoding
        │   ├── opening_loc: (1,0)-(1,2) = ":\""
        │   ├── value_loc: (1,2)-(2,5) = "foo\n  bar"
        │   ├── closing_loc: (2,5)-(2,6) = "\""
        │   └── unescaped: "foo\n  bar"
        └── @ SymbolNode (location: (4,0)-(5,4))
            ├── flags: newline, static_literal
            ├── opening_loc: (4,0)-(4,2) = ":\""
            ├── value_loc: (4,2)-(5,3) = "\n’"
            ├── closing_loc: (5,3)-(5,4) = "\""
            └── unescaped: "\n’"
