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@ ProgramNode (location: (1,0)-(3,1))
├── locals: [:a, :b]
└── statements:
@ StatementsNode (location: (1,0)-(3,1))
└── body: (length: 2)
├── @ MultiWriteNode (location: (1,0)-(2,5))
│ ├── targets: (length: 2)
│ │ ├── @ LocalVariableTargetNode (location: (1,0)-(1,1))
│ │ │ ├── name: :a
│ │ │ └── depth: 0
│ │ └── @ LocalVariableTargetNode (location: (2,0)-(2,1))
│ │ ├── name: :b
│ │ └── depth: 0
│ ├── lparen_loc: ∅
│ ├── rparen_loc: ∅
│ ├── operator_loc: (2,2)-(2,3) = "="
│ └── value:
│ @ CallNode (location: (2,4)-(2,5))
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── message_loc: (2,4)-(2,5) = "c"
│ ├── opening_loc: ∅
│ ├── arguments: ∅
│ ├── closing_loc: ∅
│ ├── block: ∅
│ ├── flags: variable_call
│ └── name: "c"
└── @ CallNode (location: (3,0)-(3,1))
├── receiver: ∅
├── call_operator_loc: ∅
├── message_loc: (3,0)-(3,1) = "d"
├── opening_loc: ∅
├── arguments: ∅
├── closing_loc: ∅
├── block: ∅
├── flags: variable_call
└── name: "d"
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