@ ProgramNode (location: (1,0)-(1,24))
├── flags: ∅
├── locals: [:a, :b, :c, :s, :x, :y, :z]
└── statements:
    @ StatementsNode (location: (1,0)-(1,24))
    ├── flags: ∅
    └── body: (length: 1)
        └── @ MultiWriteNode (location: (1,0)-(1,24))
            ├── flags: newline
            ├── lefts: (length: 3)
            │   ├── @ LocalVariableTargetNode (location: (1,0)-(1,1))
            │   │   ├── flags: ∅
            │   │   ├── name: :a
            │   │   └── depth: 0
            │   ├── @ LocalVariableTargetNode (location: (1,3)-(1,4))
            │   │   ├── flags: ∅
            │   │   ├── name: :b
            │   │   └── depth: 0
            │   └── @ LocalVariableTargetNode (location: (1,6)-(1,7))
            │       ├── flags: ∅
            │       ├── name: :c
            │       └── depth: 0
            ├── rest:
            │   @ SplatNode (location: (1,9)-(1,11))
            │   ├── flags: ∅
            │   ├── operator_loc: (1,9)-(1,10) = "*"
            │   └── expression:
            │       @ LocalVariableTargetNode (location: (1,10)-(1,11))
            │       ├── flags: ∅
            │       ├── name: :s
            │       └── depth: 0
            ├── rights: (length: 3)
            │   ├── @ LocalVariableTargetNode (location: (1,13)-(1,14))
            │   │   ├── flags: ∅
            │   │   ├── name: :x
            │   │   └── depth: 0
            │   ├── @ LocalVariableTargetNode (location: (1,16)-(1,17))
            │   │   ├── flags: ∅
            │   │   ├── name: :y
            │   │   └── depth: 0
            │   └── @ LocalVariableTargetNode (location: (1,19)-(1,20))
            │       ├── flags: ∅
            │       ├── name: :z
            │       └── depth: 0
            ├── lparen_loc: ∅
            ├── rparen_loc: ∅
            ├── operator_loc: (1,21)-(1,22) = "="
            └── value:
                @ CallNode (location: (1,23)-(1,24))
                ├── flags: variable_call, ignore_visibility
                ├── receiver: ∅
                ├── call_operator_loc: ∅
                ├── name: :f
                ├── message_loc: (1,23)-(1,24) = "f"
                ├── opening_loc: ∅
                ├── arguments: ∅
                ├── closing_loc: ∅
                ├── equal_loc: ∅
                └── block: ∅
