@ ProgramNode (location: (1,0)-(1,19))
├── locals: [:m]
└── statements:
    @ StatementsNode (location: (1,0)-(1,19))
    └── body: (length: 1)
        └── @ LocalVariableWriteNode (location: (1,0)-(1,19))
            ├── name: :m
            ├── depth: 0
            ├── name_loc: (1,0)-(1,1) = "m"
            ├── value:
            │   @ LambdaNode (location: (1,4)-(1,19))
            │   ├── locals: [:args]
            │   ├── operator_loc: (1,4)-(1,6) = "->"
            │   ├── opening_loc: (1,13)-(1,15) = "do"
            │   ├── closing_loc: (1,16)-(1,19) = "end"
            │   ├── parameters:
            │   │   @ BlockParametersNode (location: (1,7)-(1,12))
            │   │   ├── parameters:
            │   │   │   @ ParametersNode (location: (1,7)-(1,12))
            │   │   │   ├── requireds: (length: 0)
            │   │   │   ├── optionals: (length: 0)
            │   │   │   ├── rest:
            │   │   │   │   @ RestParameterNode (location: (1,7)-(1,12))
            │   │   │   │   ├── flags: ∅
            │   │   │   │   ├── name: :args
            │   │   │   │   ├── name_loc: (1,8)-(1,12) = "args"
            │   │   │   │   └── operator_loc: (1,7)-(1,8) = "*"
            │   │   │   ├── posts: (length: 0)
            │   │   │   ├── keywords: (length: 0)
            │   │   │   ├── keyword_rest: ∅
            │   │   │   └── block: ∅
            │   │   ├── locals: (length: 0)
            │   │   ├── opening_loc: ∅
            │   │   └── closing_loc: ∅
            │   └── body: ∅
            └── operator_loc: (1,2)-(1,3) = "="