@ ProgramNode (location: (0...29))
├── locals: []
└── statements:
    @ StatementsNode (location: (0...29))
    └── body: (length: 2)
        ├── @ ArrayNode (location: (0...14))
        │   ├── elements: (length: 2)
        │   │   ├── @ SymbolNode (location: (3...6))
        │   │   │   ├── opening_loc: ∅
        │   │   │   ├── value_loc: (3...6) = "foo"
        │   │   │   ├── closing_loc: ∅
        │   │   │   └── unescaped: "foo"
        │   │   └── @ InterpolatedSymbolNode (location: (7...13))
        │   │       ├── opening_loc: ∅
        │   │       ├── parts: (length: 1)
        │   │       │   └── @ EmbeddedStatementsNode (location: (7...13))
        │   │       │       ├── opening_loc: (7...9) = "\#{"
        │   │       │       ├── statements:
        │   │       │       │   @ StatementsNode (location: (9...12))
        │   │       │       │   └── body: (length: 1)
        │   │       │       │       └── @ CallNode (location: (9...12))
        │   │       │       │           ├── receiver: ∅
        │   │       │       │           ├── call_operator_loc: ∅
        │   │       │       │           ├── message_loc: (9...12) = "bar"
        │   │       │       │           ├── opening_loc: ∅
        │   │       │       │           ├── arguments: ∅
        │   │       │       │           ├── closing_loc: ∅
        │   │       │       │           ├── block: ∅
        │   │       │       │           ├── flags: variable_call
        │   │       │       │           └── name: "bar"
        │   │       │       └── closing_loc: (12...13) = "}"
        │   │       └── closing_loc: ∅
        │   ├── opening_loc: (0...3) = "%I["
        │   └── closing_loc: (13...14) = "]"
        └── @ ArrayNode (location: (16...29))
            ├── elements: (length: 1)
            │   └── @ InterpolatedSymbolNode (location: (19...28))
            │       ├── opening_loc: ∅
            │       ├── parts: (length: 2)
            │       │   ├── @ StringNode (location: (19...22))
            │       │   │   ├── opening_loc: ∅
            │       │   │   ├── content_loc: (19...22) = "foo"
            │       │   │   ├── closing_loc: ∅
            │       │   │   └── unescaped: "foo"
            │       │   └── @ EmbeddedStatementsNode (location: (22...28))
            │       │       ├── opening_loc: (22...24) = "\#{"
            │       │       ├── statements:
            │       │       │   @ StatementsNode (location: (24...27))
            │       │       │   └── body: (length: 1)
            │       │       │       └── @ CallNode (location: (24...27))
            │       │       │           ├── receiver: ∅
            │       │       │           ├── call_operator_loc: ∅
            │       │       │           ├── message_loc: (24...27) = "bar"
            │       │       │           ├── opening_loc: ∅
            │       │       │           ├── arguments: ∅
            │       │       │           ├── closing_loc: ∅
            │       │       │           ├── block: ∅
            │       │       │           ├── flags: variable_call
            │       │       │           └── name: "bar"
            │       │       └── closing_loc: (27...28) = "}"
            │       └── closing_loc: ∅
            ├── opening_loc: (16...19) = "%I["
            └── closing_loc: (28...29) = "]"
