@ ProgramNode (location: (0...35))
├── locals: []
└── statements:
    @ StatementsNode (location: (0...35))
    └── body: (length: 1)
        └── @ BeginNode (location: (0...35))
            ├── begin_keyword_loc: (0...5) = "begin"
            ├── statements:
            │   @ StatementsNode (location: (8...9))
            │   └── body: (length: 1)
            │       └── @ CallNode (location: (8...9))
            │           ├── receiver: ∅
            │           ├── call_operator_loc: ∅
            │           ├── message_loc: (8...9) = "a"
            │           ├── opening_loc: ∅
            │           ├── arguments: ∅
            │           ├── closing_loc: ∅
            │           ├── block: ∅
            │           ├── flags: variable_call
            │           └── name: "a"
            ├── rescue_clause:
            │   @ RescueNode (location: (10...31))
            │   ├── keyword_loc: (10...16) = "rescue"
            │   ├── exceptions: (length: 0)
            │   ├── operator_loc: ∅
            │   ├── reference: ∅
            │   ├── statements:
            │   │   @ StatementsNode (location: (19...20))
            │   │   └── body: (length: 1)
            │   │       └── @ CallNode (location: (19...20))
            │   │           ├── receiver: ∅
            │   │           ├── call_operator_loc: ∅
            │   │           ├── message_loc: (19...20) = "b"
            │   │           ├── opening_loc: ∅
            │   │           ├── arguments: ∅
            │   │           ├── closing_loc: ∅
            │   │           ├── block: ∅
            │   │           ├── flags: variable_call
            │   │           └── name: "b"
            │   └── consequent:
            │       @ RescueNode (location: (21...31))
            │       ├── keyword_loc: (21...27) = "rescue"
            │       ├── exceptions: (length: 0)
            │       ├── operator_loc: ∅
            │       ├── reference: ∅
            │       ├── statements:
            │       │   @ StatementsNode (location: (30...31))
            │       │   └── body: (length: 1)
            │       │       └── @ CallNode (location: (30...31))
            │       │           ├── receiver: ∅
            │       │           ├── call_operator_loc: ∅
            │       │           ├── message_loc: (30...31) = "c"
            │       │           ├── opening_loc: ∅
            │       │           ├── arguments: ∅
            │       │           ├── closing_loc: ∅
            │       │           ├── block: ∅
            │       │           ├── flags: variable_call
            │       │           └── name: "c"
            │       └── consequent: ∅
            ├── else_clause: ∅
            ├── ensure_clause: ∅
            └── end_keyword_loc: (32...35) = "end"
