@ ProgramNode (location: (0...30))
├── locals: []
└── statements:
    @ StatementsNode (location: (0...30))
    └── body: (length: 3)
        ├── @ SuperNode (location: (0...9))
        │   ├── keyword_loc: (0...5) = "super"
        │   ├── lparen_loc: ∅
        │   ├── arguments:
        │   │   @ ArgumentsNode (location: (6...9))
        │   │   └── arguments: (length: 1)
        │   │       └── @ CallNode (location: (6...9))
        │   │           ├── receiver: ∅
        │   │           ├── call_operator_loc: ∅
        │   │           ├── message_loc: (6...9) = "foo"
        │   │           ├── opening_loc: ∅
        │   │           ├── arguments: ∅
        │   │           ├── closing_loc: ∅
        │   │           ├── block: ∅
        │   │           ├── flags: variable_call
        │   │           └── name: "foo"
        │   ├── rparen_loc: ∅
        │   └── block: ∅
        ├── @ SuperNode (location: (11...18))
        │   ├── keyword_loc: (11...16) = "super"
        │   ├── lparen_loc: (16...17) = "("
        │   ├── arguments: ∅
        │   ├── rparen_loc: (17...18) = ")"
        │   └── block: ∅
        └── @ SuperNode (location: (20...30))
            ├── keyword_loc: (20...25) = "super"
            ├── lparen_loc: (25...26) = "("
            ├── arguments:
            │   @ ArgumentsNode (location: (26...29))
            │   └── arguments: (length: 1)
            │       └── @ CallNode (location: (26...29))
            │           ├── receiver: ∅
            │           ├── call_operator_loc: ∅
            │           ├── message_loc: (26...29) = "foo"
            │           ├── opening_loc: ∅
            │           ├── arguments: ∅
            │           ├── closing_loc: ∅
            │           ├── block: ∅
            │           ├── flags: variable_call
            │           └── name: "foo"
            ├── rparen_loc: (29...30) = ")"
            └── block: ∅
