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