@ ProgramNode (location: (1,0)-(5,9))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(5,9))
    └── body: (length: 3)
        ├── @ ArrayNode (location: (1,0)-(1,6))
        │   ├── flags: contains_splat
        │   ├── elements: (length: 1)
        │   │   └── @ SplatNode (location: (1,1)-(1,5))
        │   │       ├── operator_loc: (1,1)-(1,2) = "*"
        │   │       └── expression:
        │   │           @ CallNode (location: (1,2)-(1,5))
        │   │           ├── flags: variable_call
        │   │           ├── receiver: ∅
        │   │           ├── call_operator_loc: ∅
        │   │           ├── name: :foo
        │   │           ├── message_loc: (1,2)-(1,5) = "foo"
        │   │           ├── opening_loc: ∅
        │   │           ├── arguments: ∅
        │   │           ├── closing_loc: ∅
        │   │           └── block: ∅
        │   ├── opening_loc: (1,0)-(1,1) = "["
        │   └── closing_loc: (1,5)-(1,6) = "]"
        ├── @ ArrayNode (location: (3,0)-(3,12))
        │   ├── flags: contains_splat
        │   ├── elements: (length: 3)
        │   │   ├── @ IntegerNode (location: (3,1)-(3,2))
        │   │   │   └── flags: decimal
        │   │   ├── @ SplatNode (location: (3,4)-(3,8))
        │   │   │   ├── operator_loc: (3,4)-(3,5) = "*"
        │   │   │   └── expression:
        │   │   │       @ CallNode (location: (3,5)-(3,8))
        │   │   │       ├── flags: variable_call
        │   │   │       ├── receiver: ∅
        │   │   │       ├── call_operator_loc: ∅
        │   │   │       ├── name: :foo
        │   │   │       ├── message_loc: (3,5)-(3,8) = "foo"
        │   │   │       ├── opening_loc: ∅
        │   │   │       ├── arguments: ∅
        │   │   │       ├── closing_loc: ∅
        │   │   │       └── block: ∅
        │   │   └── @ IntegerNode (location: (3,10)-(3,11))
        │   │       └── flags: decimal
        │   ├── opening_loc: (3,0)-(3,1) = "["
        │   └── closing_loc: (3,11)-(3,12) = "]"
        └── @ ArrayNode (location: (5,0)-(5,9))
            ├── flags: contains_splat
            ├── elements: (length: 2)
            │   ├── @ IntegerNode (location: (5,1)-(5,2))
            │   │   └── flags: decimal
            │   └── @ SplatNode (location: (5,4)-(5,8))
            │       ├── operator_loc: (5,4)-(5,5) = "*"
            │       └── expression:
            │           @ CallNode (location: (5,5)-(5,8))
            │           ├── flags: variable_call
            │           ├── receiver: ∅
            │           ├── call_operator_loc: ∅
            │           ├── name: :foo
            │           ├── message_loc: (5,5)-(5,8) = "foo"
            │           ├── opening_loc: ∅
            │           ├── arguments: ∅
            │           ├── closing_loc: ∅
            │           └── block: ∅
            ├── opening_loc: (5,0)-(5,1) = "["
            └── closing_loc: (5,8)-(5,9) = "]"
