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@ ProgramNode (location: (1,0)-(1,28))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(1,28))
└── body: (length: 1)
└── @ DefNode (location: (1,0)-(1,28))
├── name: :f
├── name_loc: (1,4)-(1,5) = "f"
├── receiver: ∅
├── parameters:
│ @ ParametersNode (location: (1,6)-(1,16))
│ ├── requireds: (length: 0)
│ ├── optionals: (length: 0)
│ ├── rest: ∅
│ ├── posts: (length: 0)
│ ├── keywords: (length: 1)
│ │ └── @ OptionalKeywordParameterNode (location: (1,6)-(1,12))
│ │ ├── flags: ∅
│ │ ├── name: :a
│ │ ├── name_loc: (1,6)-(1,8) = "a:"
│ │ └── value:
│ │ @ NilNode (location: (1,9)-(1,12))
│ ├── keyword_rest:
│ │ @ KeywordRestParameterNode (location: (1,14)-(1,16))
│ │ ├── flags: ∅
│ │ ├── name: ∅
│ │ ├── name_loc: ∅
│ │ └── operator_loc: (1,14)-(1,16) = "**"
│ └── block: ∅
├── body:
│ @ StatementsNode (location: (1,19)-(1,24))
│ └── body: (length: 1)
│ └── @ CallNode (location: (1,19)-(1,24))
│ ├── flags: ignore_visibility
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── name: :b
│ ├── message_loc: (1,19)-(1,20) = "b"
│ ├── opening_loc: (1,20)-(1,21) = "("
│ ├── arguments:
│ │ @ ArgumentsNode (location: (1,21)-(1,23))
│ │ ├── flags: contains_keyword_splat
│ │ └── arguments: (length: 1)
│ │ └── @ KeywordHashNode (location: (1,21)-(1,23))
│ │ ├── flags: ∅
│ │ └── elements: (length: 1)
│ │ └── @ AssocSplatNode (location: (1,21)-(1,23))
│ │ ├── value: ∅
│ │ └── operator_loc: (1,21)-(1,23) = "**"
│ ├── closing_loc: (1,23)-(1,24) = ")"
│ └── block: ∅
├── locals: [:a]
├── def_keyword_loc: (1,0)-(1,3) = "def"
├── operator_loc: ∅
├── lparen_loc: (1,5)-(1,6) = "("
├── rparen_loc: (1,16)-(1,17) = ")"
├── equal_loc: ∅
└── end_keyword_loc: (1,25)-(1,28) = "end"
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