@ ProgramNode (location: (1,0)-(1,43))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(1,43))
    └── body: (length: 1)
        └── @ CaseNode (location: (1,0)-(1,43))
            ├── predicate:
            │   @ CallNode (location: (1,5)-(1,8))
            │   ├── flags: variable_call
            │   ├── receiver: ∅
            │   ├── call_operator_loc: ∅
            │   ├── name: :foo
            │   ├── message_loc: (1,5)-(1,8) = "foo"
            │   ├── opening_loc: ∅
            │   ├── arguments: ∅
            │   ├── closing_loc: ∅
            │   └── block: ∅
            ├── conditions: (length: 2)
            │   ├── @ WhenNode (location: (1,10)-(1,27))
            │   │   ├── keyword_loc: (1,10)-(1,14) = "when"
            │   │   ├── conditions: (length: 2)
            │   │   │   ├── @ IntegerNode (location: (1,15)-(1,16))
            │   │   │   │   └── flags: decimal
            │   │   │   └── @ SplatNode (location: (1,18)-(1,22))
            │   │   │       ├── operator_loc: (1,18)-(1,19) = "*"
            │   │   │       └── expression:
            │   │   │           @ CallNode (location: (1,19)-(1,22))
            │   │   │           ├── flags: variable_call
            │   │   │           ├── receiver: ∅
            │   │   │           ├── call_operator_loc: ∅
            │   │   │           ├── name: :baz
            │   │   │           ├── message_loc: (1,19)-(1,22) = "baz"
            │   │   │           ├── opening_loc: ∅
            │   │   │           ├── arguments: ∅
            │   │   │           ├── closing_loc: ∅
            │   │   │           └── block: ∅
            │   │   └── statements:
            │   │       @ StatementsNode (location: (1,24)-(1,27))
            │   │       └── body: (length: 1)
            │   │           └── @ CallNode (location: (1,24)-(1,27))
            │   │               ├── flags: variable_call
            │   │               ├── receiver: ∅
            │   │               ├── call_operator_loc: ∅
            │   │               ├── name: :bar
            │   │               ├── message_loc: (1,24)-(1,27) = "bar"
            │   │               ├── opening_loc: ∅
            │   │               ├── arguments: ∅
            │   │               ├── closing_loc: ∅
            │   │               └── block: ∅
            │   └── @ WhenNode (location: (1,29)-(1,38))
            │       ├── keyword_loc: (1,29)-(1,33) = "when"
            │       ├── conditions: (length: 1)
            │       │   └── @ SplatNode (location: (1,34)-(1,38))
            │       │       ├── operator_loc: (1,34)-(1,35) = "*"
            │       │       └── expression:
            │       │           @ CallNode (location: (1,35)-(1,38))
            │       │           ├── flags: variable_call
            │       │           ├── receiver: ∅
            │       │           ├── call_operator_loc: ∅
            │       │           ├── name: :foo
            │       │           ├── message_loc: (1,35)-(1,38) = "foo"
            │       │           ├── opening_loc: ∅
            │       │           ├── arguments: ∅
            │       │           ├── closing_loc: ∅
            │       │           └── block: ∅
            │       └── statements: ∅
            ├── consequent: ∅
            ├── case_keyword_loc: (1,0)-(1,4) = "case"
            └── end_keyword_loc: (1,40)-(1,43) = "end"
