@ ProgramNode (location: (1,0)-(1,29))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(1,29))
    └── body: (length: 1)
        └── @ BeginNode (location: (1,0)-(1,29))
            ├── begin_keyword_loc: (1,0)-(1,5) = "begin"
            ├── statements:
            │   @ StatementsNode (location: (1,7)-(1,11))
            │   └── body: (length: 1)
            │       └── @ CallNode (location: (1,7)-(1,11))
            │           ├── flags: variable_call
            │           ├── receiver: ∅
            │           ├── call_operator_loc: ∅
            │           ├── name: :meth
            │           ├── message_loc: (1,7)-(1,11) = "meth"
            │           ├── opening_loc: ∅
            │           ├── arguments: ∅
            │           ├── closing_loc: ∅
            │           └── block: ∅
            ├── rescue_clause: ∅
            ├── else_clause: ∅
            ├── ensure_clause:
            │   @ EnsureNode (location: (1,13)-(1,29))
            │   ├── ensure_keyword_loc: (1,13)-(1,19) = "ensure"
            │   ├── statements:
            │   │   @ StatementsNode (location: (1,21)-(1,24))
            │   │   └── body: (length: 1)
            │   │       └── @ CallNode (location: (1,21)-(1,24))
            │   │           ├── flags: variable_call
            │   │           ├── receiver: ∅
            │   │           ├── call_operator_loc: ∅
            │   │           ├── name: :bar
            │   │           ├── message_loc: (1,21)-(1,24) = "bar"
            │   │           ├── opening_loc: ∅
            │   │           ├── arguments: ∅
            │   │           ├── closing_loc: ∅
            │   │           └── block: ∅
            │   └── end_keyword_loc: (1,26)-(1,29) = "end"
            └── end_keyword_loc: (1,26)-(1,29) = "end"
