@ ProgramNode (location: (1,0)-(2,3))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(2,3))
    └── body: (length: 2)
        ├── @ IntegerNode (location: (1,0)-(1,1))
        │   ├── flags: decimal
        │   └── value: 1
        └── @ RangeNode (location: (2,0)-(2,3))
            ├── flags: ∅
            ├── left: ∅
            ├── right:
            │   @ IntegerNode (location: (2,2)-(2,3))
            │   ├── flags: decimal
            │   └── value: 3
            └── operator_loc: (2,0)-(2,2) = ".."