@ ProgramNode (location: (0...23))
├── locals: [:a, :b, :c, :x, :y, :z]
└── statements:
    @ StatementsNode (location: (0...23))
    └── body: (length: 1)
        └── @ MultiWriteNode (location: (0...23))
            ├── targets: (length: 7)
            │   ├── @ LocalVariableTargetNode (location: (0...1))
            │   │   ├── name: :a
            │   │   └── depth: 0
            │   ├── @ LocalVariableTargetNode (location: (3...4))
            │   │   ├── name: :b
            │   │   └── depth: 0
            │   ├── @ LocalVariableTargetNode (location: (6...7))
            │   │   ├── name: :c
            │   │   └── depth: 0
            │   ├── @ SplatNode (location: (9...10))
            │   │   ├── operator_loc: (9...10) = "*"
            │   │   └── expression: ∅
            │   ├── @ LocalVariableTargetNode (location: (12...13))
            │   │   ├── name: :x
            │   │   └── depth: 0
            │   ├── @ LocalVariableTargetNode (location: (15...16))
            │   │   ├── name: :y
            │   │   └── depth: 0
            │   └── @ LocalVariableTargetNode (location: (18...19))
            │       ├── name: :z
            │       └── depth: 0
            ├── lparen_loc: ∅
            ├── rparen_loc: ∅
            ├── operator_loc: (20...21) = "="
            └── value:
                @ CallNode (location: (22...23))
                ├── receiver: ∅
                ├── call_operator_loc: ∅
                ├── message_loc: (22...23) = "f"
                ├── opening_loc: ∅
                ├── arguments: ∅
                ├── closing_loc: ∅
                ├── block: ∅
                ├── flags: variable_call
                └── name: "f"
