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@ ProgramNode (location: (1,0)-(1,26))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(1,26))
└── body: (length: 1)
└── @ DefNode (location: (1,0)-(1,26))
├── name: :fun
├── name_loc: (1,4)-(1,7) = "fun"
├── receiver: ∅
├── parameters:
│ @ ParametersNode (location: (1,8)-(1,16))
│ ├── requireds: (length: 0)
│ ├── optionals: (length: 0)
│ ├── rest: ∅
│ ├── posts: (length: 0)
│ ├── keywords: (length: 1)
│ │ └── @ OptionalKeywordParameterNode (location: (1,8)-(1,16))
│ │ ├── flags: ∅
│ │ ├── name: :kw
│ │ ├── name_loc: (1,8)-(1,11) = "kw:"
│ │ └── value:
│ │ @ SymbolNode (location: (1,12)-(1,16))
│ │ ├── flags: forced_us_ascii_encoding
│ │ ├── opening_loc: (1,12)-(1,13) = ":"
│ │ ├── value_loc: (1,13)-(1,16) = "val"
│ │ ├── closing_loc: ∅
│ │ └── unescaped: "val"
│ ├── keyword_rest: ∅
│ └── block: ∅
├── body:
│ @ StatementsNode (location: (1,19)-(1,21))
│ └── body: (length: 1)
│ └── @ LocalVariableReadNode (location: (1,19)-(1,21))
│ ├── name: :kw
│ └── depth: 0
├── locals: [:kw]
├── def_keyword_loc: (1,0)-(1,3) = "def"
├── operator_loc: ∅
├── lparen_loc: (1,7)-(1,8) = "("
├── rparen_loc: (1,16)-(1,17) = ")"
├── equal_loc: ∅
└── end_keyword_loc: (1,23)-(1,26) = "end"
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