@ ProgramNode (location: (1,0)-(5,32))
├── flags: ∅
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(5,32))
    ├── flags: ∅
    └── body: (length: 3)
        ├── @ CaseMatchNode (location: (1,0)-(1,31))
        │   ├── flags: newline
        │   ├── predicate:
        │   │   @ CallNode (location: (1,5)-(1,8))
        │   │   ├── flags: variable_call, ignore_visibility
        │   │   ├── receiver: ∅
        │   │   ├── call_operator_loc: ∅
        │   │   ├── name: :foo
        │   │   ├── message_loc: (1,5)-(1,8) = "foo"
        │   │   ├── opening_loc: ∅
        │   │   ├── arguments: ∅
        │   │   ├── closing_loc: ∅
        │   │   └── block: ∅
        │   ├── conditions: (length: 1)
        │   │   └── @ InNode (location: (1,10)-(1,26))
        │   │       ├── flags: ∅
        │   │       ├── pattern:
        │   │       │   @ ConstantPathNode (location: (1,13)-(1,16))
        │   │       │   ├── flags: ∅
        │   │       │   ├── parent: ∅
        │   │       │   ├── name: :A
        │   │       │   ├── delimiter_loc: (1,13)-(1,15) = "::"
        │   │       │   └── name_loc: (1,15)-(1,16) = "A"
        │   │       ├── statements:
        │   │       │   @ StatementsNode (location: (1,22)-(1,26))
        │   │       │   ├── flags: ∅
        │   │       │   └── body: (length: 1)
        │   │       │       └── @ TrueNode (location: (1,22)-(1,26))
        │   │       │           └── flags: newline, static_literal
        │   │       ├── in_loc: (1,10)-(1,12) = "in"
        │   │       └── then_loc: (1,17)-(1,21) = "then"
        │   ├── else_clause: ∅
        │   ├── case_keyword_loc: (1,0)-(1,4) = "case"
        │   └── end_keyword_loc: (1,28)-(1,31) = "end"
        ├── @ CaseMatchNode (location: (3,0)-(3,29))
        │   ├── flags: newline
        │   ├── predicate:
        │   │   @ CallNode (location: (3,5)-(3,8))
        │   │   ├── flags: variable_call, ignore_visibility
        │   │   ├── receiver: ∅
        │   │   ├── call_operator_loc: ∅
        │   │   ├── name: :foo
        │   │   ├── message_loc: (3,5)-(3,8) = "foo"
        │   │   ├── opening_loc: ∅
        │   │   ├── arguments: ∅
        │   │   ├── closing_loc: ∅
        │   │   └── block: ∅
        │   ├── conditions: (length: 1)
        │   │   └── @ InNode (location: (3,10)-(3,24))
        │   │       ├── flags: ∅
        │   │       ├── pattern:
        │   │       │   @ ConstantReadNode (location: (3,13)-(3,14))
        │   │       │   ├── flags: ∅
        │   │       │   └── name: :A
        │   │       ├── statements:
        │   │       │   @ StatementsNode (location: (3,20)-(3,24))
        │   │       │   ├── flags: ∅
        │   │       │   └── body: (length: 1)
        │   │       │       └── @ TrueNode (location: (3,20)-(3,24))
        │   │       │           └── flags: newline, static_literal
        │   │       ├── in_loc: (3,10)-(3,12) = "in"
        │   │       └── then_loc: (3,15)-(3,19) = "then"
        │   ├── else_clause: ∅
        │   ├── case_keyword_loc: (3,0)-(3,4) = "case"
        │   └── end_keyword_loc: (3,26)-(3,29) = "end"
        └── @ CaseMatchNode (location: (5,0)-(5,32))
            ├── flags: newline
            ├── predicate:
            │   @ CallNode (location: (5,5)-(5,8))
            │   ├── flags: variable_call, ignore_visibility
            │   ├── receiver: ∅
            │   ├── call_operator_loc: ∅
            │   ├── name: :foo
            │   ├── message_loc: (5,5)-(5,8) = "foo"
            │   ├── opening_loc: ∅
            │   ├── arguments: ∅
            │   ├── closing_loc: ∅
            │   └── block: ∅
            ├── conditions: (length: 1)
            │   └── @ InNode (location: (5,10)-(5,27))
            │       ├── flags: ∅
            │       ├── pattern:
            │       │   @ ConstantPathNode (location: (5,13)-(5,17))
            │       │   ├── flags: ∅
            │       │   ├── parent:
            │       │   │   @ ConstantReadNode (location: (5,13)-(5,14))
            │       │   │   ├── flags: ∅
            │       │   │   └── name: :A
            │       │   ├── name: :B
            │       │   ├── delimiter_loc: (5,14)-(5,16) = "::"
            │       │   └── name_loc: (5,16)-(5,17) = "B"
            │       ├── statements:
            │       │   @ StatementsNode (location: (5,23)-(5,27))
            │       │   ├── flags: ∅
            │       │   └── body: (length: 1)
            │       │       └── @ TrueNode (location: (5,23)-(5,27))
            │       │           └── flags: newline, static_literal
            │       ├── in_loc: (5,10)-(5,12) = "in"
            │       └── then_loc: (5,18)-(5,22) = "then"
            ├── else_clause: ∅
            ├── case_keyword_loc: (5,0)-(5,4) = "case"
            └── end_keyword_loc: (5,29)-(5,32) = "end"
