@ ProgramNode (location: (1,0)-(5,10))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(5,10))
    └── body: (length: 3)
        ├── @ CallNode (location: (1,0)-(1,10))
        │   ├── flags: ∅
        │   ├── receiver:
        │   │   @ FloatNode (location: (1,0)-(1,4))
        │   ├── call_operator_loc: ∅
        │   ├── name: :**
        │   ├── message_loc: (1,5)-(1,7) = "**"
        │   ├── opening_loc: ∅
        │   ├── arguments:
        │   │   @ ArgumentsNode (location: (1,8)-(1,10))
        │   │   ├── flags: ∅
        │   │   └── arguments: (length: 1)
        │   │       └── @ IntegerNode (location: (1,8)-(1,10))
        │   │           └── flags: decimal
        │   ├── closing_loc: ∅
        │   └── block: ∅
        ├── @ CallNode (location: (3,0)-(3,8))
        │   ├── flags: ∅
        │   ├── receiver:
        │   │   @ CallNode (location: (3,1)-(3,8))
        │   │   ├── flags: ∅
        │   │   ├── receiver:
        │   │   │   @ IntegerNode (location: (3,1)-(3,2))
        │   │   │   └── flags: decimal
        │   │   ├── call_operator_loc: ∅
        │   │   ├── name: :**
        │   │   ├── message_loc: (3,3)-(3,5) = "**"
        │   │   ├── opening_loc: ∅
        │   │   ├── arguments:
        │   │   │   @ ArgumentsNode (location: (3,6)-(3,8))
        │   │   │   ├── flags: ∅
        │   │   │   └── arguments: (length: 1)
        │   │   │       └── @ IntegerNode (location: (3,6)-(3,8))
        │   │   │           └── flags: decimal
        │   │   ├── closing_loc: ∅
        │   │   └── block: ∅
        │   ├── call_operator_loc: ∅
        │   ├── name: :-@
        │   ├── message_loc: (3,0)-(3,1) = "-"
        │   ├── opening_loc: ∅
        │   ├── arguments: ∅
        │   ├── closing_loc: ∅
        │   └── block: ∅
        └── @ CallNode (location: (5,0)-(5,10))
            ├── flags: ∅
            ├── receiver:
            │   @ CallNode (location: (5,1)-(5,10))
            │   ├── flags: ∅
            │   ├── receiver:
            │   │   @ FloatNode (location: (5,1)-(5,4))
            │   ├── call_operator_loc: ∅
            │   ├── name: :**
            │   ├── message_loc: (5,5)-(5,7) = "**"
            │   ├── opening_loc: ∅
            │   ├── arguments:
            │   │   @ ArgumentsNode (location: (5,8)-(5,10))
            │   │   ├── flags: ∅
            │   │   └── arguments: (length: 1)
            │   │       └── @ IntegerNode (location: (5,8)-(5,10))
            │   │           └── flags: decimal
            │   ├── closing_loc: ∅
            │   └── block: ∅
            ├── call_operator_loc: ∅
            ├── name: :-@
            ├── message_loc: (5,0)-(5,1) = "-"
            ├── opening_loc: ∅
            ├── arguments: ∅
            ├── closing_loc: ∅
            └── block: ∅
