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@ ProgramNode (location: (1,0)-(1,27))
├── locals: []
└── statements:
@ StatementsNode (location: (1,0)-(1,27))
└── body: (length: 1)
└── @ DefNode (location: (1,0)-(1,27))
├── name: :exec
├── name_loc: (1,4)-(1,8) = "exec"
├── receiver: ∅
├── parameters:
│ @ ParametersNode (location: (1,9)-(1,12))
│ ├── requireds: (length: 1)
│ │ └── @ RequiredParameterNode (location: (1,9)-(1,12))
│ │ ├── flags: ∅
│ │ └── name: :cmd
│ ├── optionals: (length: 0)
│ ├── rest: ∅
│ ├── posts: (length: 0)
│ ├── keywords: (length: 0)
│ ├── keyword_rest: ∅
│ └── block: ∅
├── body:
│ @ StatementsNode (location: (1,16)-(1,27))
│ └── body: (length: 1)
│ └── @ CallNode (location: (1,16)-(1,27))
│ ├── flags: ignore_visibility
│ ├── receiver: ∅
│ ├── call_operator_loc: ∅
│ ├── name: :system
│ ├── message_loc: (1,16)-(1,22) = "system"
│ ├── opening_loc: (1,22)-(1,23) = "("
│ ├── arguments:
│ │ @ ArgumentsNode (location: (1,23)-(1,26))
│ │ ├── flags: ∅
│ │ └── arguments: (length: 1)
│ │ └── @ LocalVariableReadNode (location: (1,23)-(1,26))
│ │ ├── name: :cmd
│ │ └── depth: 0
│ ├── closing_loc: (1,26)-(1,27) = ")"
│ └── block: ∅
├── locals: [:cmd]
├── def_keyword_loc: (1,0)-(1,3) = "def"
├── operator_loc: ∅
├── lparen_loc: (1,8)-(1,9) = "("
├── rparen_loc: (1,12)-(1,13) = ")"
├── equal_loc: (1,14)-(1,15) = "="
└── end_keyword_loc: ∅
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