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@ ProgramNode (location: (1,0)-(1,18))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(1,18))
└── body: (length: 1)
└── @ IfNode (location: (1,0)-(1,18))
├── if_keyword_loc: (1,0)-(1,2) = "if"
├── predicate:
│ @ ParenthesesNode (location: (1,3)-(1,8))
│ ├── body:
│ │ @ StatementsNode (location: (1,4)-(1,7))
│ │ └── body: (length: 1)
│ │ └── @ CallNode (location: (1,4)-(1,7))
│ │ ├── flags: variable_call, ignore_visibility
│ │ ├── receiver: ∅
│ │ ├── call_operator_loc: ∅
│ │ ├── name: :bar
│ │ ├── message_loc: (1,4)-(1,7) = "bar"
│ │ ├── opening_loc: ∅
│ │ ├── arguments: ∅
│ │ ├── closing_loc: ∅
│ │ └── block: ∅
│ ├── opening_loc: (1,3)-(1,4) = "("
│ └── closing_loc: (1,7)-(1,8) = ")"
├── then_keyword_loc: ∅
├── statements:
│ @ StatementsNode (location: (1,10)-(1,13))
│ └── body: (length: 1)
│ └── @ CallNode (location: (1,10)-(1,13))
│ ├── flags: variable_call, ignore_visibility
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── name: :foo
│ ├── message_loc: (1,10)-(1,13) = "foo"
│ ├── opening_loc: ∅
│ ├── arguments: ∅
│ ├── closing_loc: ∅
│ └── block: ∅
├── consequent: ∅
└── end_keyword_loc: (1,15)-(1,18) = "end"
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