@ ProgramNode (location: (1,0)-(1,15))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(1,15))
    └── body: (length: 1)
        └── @ ArrayNode (location: (1,0)-(1,15))
            ├── flags: ∅
            ├── elements: (length: 3)
            │   ├── @ SymbolNode (location: (1,3)-(1,4))
            │   │   ├── flags: forced_us_ascii_encoding
            │   │   ├── opening_loc: ∅
            │   │   ├── value_loc: (1,3)-(1,4) = "a"
            │   │   ├── closing_loc: ∅
            │   │   └── unescaped: "a"
            │   ├── @ SymbolNode (location: (1,5)-(1,12))
            │   │   ├── flags: forced_us_ascii_encoding
            │   │   ├── opening_loc: ∅
            │   │   ├── value_loc: (1,5)-(1,12) = "b\#{1+1}"
            │   │   ├── closing_loc: ∅
            │   │   └── unescaped: "b\#{1+1}"
            │   └── @ SymbolNode (location: (1,13)-(1,14))
            │       ├── flags: forced_us_ascii_encoding
            │       ├── opening_loc: ∅
            │       ├── value_loc: (1,13)-(1,14) = "c"
            │       ├── closing_loc: ∅
            │       └── unescaped: "c"
            ├── opening_loc: (1,0)-(1,3) = "%i("
            └── closing_loc: (1,14)-(1,15) = ")"