@ ProgramNode (location: (1,0)-(9,3))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(9,3))
    └── body: (length: 1)
        └── @ CallNode (location: (1,0)-(9,3))
            ├── receiver: ∅
            ├── call_operator_loc: ∅
            ├── message_loc: (1,0)-(1,3) = "tap"
            ├── opening_loc: ∅
            ├── arguments: ∅
            ├── closing_loc: ∅
            ├── block:
            │   @ BlockNode (location: (1,4)-(9,3))
            │   ├── locals: []
            │   ├── parameters: ∅
            │   ├── body:
            │   │   @ BeginNode (location: (2,2)-(9,3))
            │   │   ├── begin_keyword_loc: ∅
            │   │   ├── statements:
            │   │   │   @ StatementsNode (location: (2,2)-(2,8))
            │   │   │   └── body: (length: 1)
            │   │   │       └── @ SymbolNode (location: (2,2)-(2,8))
            │   │   │           ├── opening_loc: (2,2)-(2,3) = ":"
            │   │   │           ├── value_loc: (2,3)-(2,8) = "begin"
            │   │   │           ├── closing_loc: ∅
            │   │   │           └── unescaped: "begin"
            │   │   ├── rescue_clause:
            │   │   │   @ RescueNode (location: (3,0)-(4,9))
            │   │   │   ├── keyword_loc: (3,0)-(3,6) = "rescue"
            │   │   │   ├── exceptions: (length: 0)
            │   │   │   ├── operator_loc: ∅
            │   │   │   ├── reference: ∅
            │   │   │   ├── statements:
            │   │   │   │   @ StatementsNode (location: (4,2)-(4,9))
            │   │   │   │   └── body: (length: 1)
            │   │   │   │       └── @ SymbolNode (location: (4,2)-(4,9))
            │   │   │   │           ├── opening_loc: (4,2)-(4,3) = ":"
            │   │   │   │           ├── value_loc: (4,3)-(4,9) = "rescue"
            │   │   │   │           ├── closing_loc: ∅
            │   │   │   │           └── unescaped: "rescue"
            │   │   │   └── consequent: ∅
            │   │   ├── else_clause:
            │   │   │   @ ElseNode (location: (5,0)-(7,6))
            │   │   │   ├── else_keyword_loc: (5,0)-(5,4) = "else"
            │   │   │   ├── statements:
            │   │   │   │   @ StatementsNode (location: (6,2)-(6,7))
            │   │   │   │   └── body: (length: 1)
            │   │   │   │       └── @ SymbolNode (location: (6,2)-(6,7))
            │   │   │   │           ├── opening_loc: (6,2)-(6,3) = ":"
            │   │   │   │           ├── value_loc: (6,3)-(6,7) = "else"
            │   │   │   │           ├── closing_loc: ∅
            │   │   │   │           └── unescaped: "else"
            │   │   │   └── end_keyword_loc: (7,0)-(7,6) = "ensure"
            │   │   ├── ensure_clause:
            │   │   │   @ EnsureNode (location: (7,0)-(9,3))
            │   │   │   ├── ensure_keyword_loc: (7,0)-(7,6) = "ensure"
            │   │   │   ├── statements:
            │   │   │   │   @ StatementsNode (location: (8,2)-(8,9))
            │   │   │   │   └── body: (length: 1)
            │   │   │   │       └── @ SymbolNode (location: (8,2)-(8,9))
            │   │   │   │           ├── opening_loc: (8,2)-(8,3) = ":"
            │   │   │   │           ├── value_loc: (8,3)-(8,9) = "ensure"
            │   │   │   │           ├── closing_loc: ∅
            │   │   │   │           └── unescaped: "ensure"
            │   │   │   └── end_keyword_loc: (9,0)-(9,3) = "end"
            │   │   └── end_keyword_loc: (9,0)-(9,3) = "end"
            │   ├── opening_loc: (1,4)-(1,6) = "do"
            │   └── closing_loc: (9,0)-(9,3) = "end"
            ├── flags: ∅
            └── name: "tap"