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@ ProgramNode (location: (1,0)-(3,20))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(3,20))
└── body: (length: 2)
├── @ UnlessNode (location: (1,0)-(1,24))
│ ├── keyword_loc: (1,0)-(1,6) = "unless"
│ ├── predicate:
│ │ @ CallNode (location: (1,7)-(1,10))
│ │ ├── receiver: ∅
│ │ ├── call_operator_loc: ∅
│ │ ├── message_loc: (1,7)-(1,10) = "foo"
│ │ ├── opening_loc: ∅
│ │ ├── arguments: ∅
│ │ ├── closing_loc: ∅
│ │ ├── block: ∅
│ │ ├── flags: variable_call
│ │ └── name: "foo"
│ ├── statements:
│ │ @ StatementsNode (location: (1,16)-(1,19))
│ │ └── body: (length: 1)
│ │ └── @ CallNode (location: (1,16)-(1,19))
│ │ ├── receiver: ∅
│ │ ├── call_operator_loc: ∅
│ │ ├── message_loc: (1,16)-(1,19) = "bar"
│ │ ├── opening_loc: ∅
│ │ ├── arguments: ∅
│ │ ├── closing_loc: ∅
│ │ ├── block: ∅
│ │ ├── flags: variable_call
│ │ └── name: "bar"
│ ├── consequent: ∅
│ └── end_keyword_loc: (1,21)-(1,24) = "end"
└── @ UnlessNode (location: (3,0)-(3,20))
├── keyword_loc: (3,0)-(3,6) = "unless"
├── predicate:
│ @ CallNode (location: (3,7)-(3,10))
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── message_loc: (3,7)-(3,10) = "foo"
│ ├── opening_loc: ∅
│ ├── arguments: ∅
│ ├── closing_loc: ∅
│ ├── block: ∅
│ ├── flags: variable_call
│ └── name: "foo"
├── statements:
│ @ StatementsNode (location: (3,12)-(3,15))
│ └── body: (length: 1)
│ └── @ CallNode (location: (3,12)-(3,15))
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── message_loc: (3,12)-(3,15) = "bar"
│ ├── opening_loc: ∅
│ ├── arguments: ∅
│ ├── closing_loc: ∅
│ ├── block: ∅
│ ├── flags: variable_call
│ └── name: "bar"
├── consequent: ∅
└── end_keyword_loc: (3,17)-(3,20) = "end"
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