@ ProgramNode (location: (1,0)-(5,25))
├── locals: []
└── statements:
    @ StatementsNode (location: (1,0)-(5,25))
    └── body: (length: 2)
        ├── @ CallNode (location: (1,0)-(1,25))
        │   ├── flags: ∅
        │   ├── receiver:
        │   │   @ StringNode (location: (1,0)-(1,9))
        │   │   ├── flags: ∅
        │   │   ├── opening_loc: (1,0)-(1,9) = "<<-TARGET"
        │   │   ├── content_loc: (2,0)-(2,0) = ""
        │   │   ├── closing_loc: (2,0)-(3,0) = "TARGET\n"
        │   │   └── unescaped: ""
        │   ├── call_operator_loc: (1,9)-(1,10) = "."
        │   ├── name: :gsub
        │   ├── message_loc: (1,10)-(1,14) = "gsub"
        │   ├── opening_loc: ∅
        │   ├── arguments:
        │   │   @ ArgumentsNode (location: (1,15)-(1,25))
        │   │   ├── flags: ∅
        │   │   └── arguments: (length: 2)
        │   │       ├── @ RegularExpressionNode (location: (1,15)-(1,21))
        │   │       │   ├── flags: forced_us_ascii_encoding
        │   │       │   ├── opening_loc: (1,15)-(1,16) = "/"
        │   │       │   ├── content_loc: (1,16)-(1,20) = "^\\s{"
        │   │       │   ├── closing_loc: (1,20)-(1,21) = "/"
        │   │       │   └── unescaped: "^\\s{"
        │   │       └── @ StringNode (location: (1,23)-(1,25))
        │   │           ├── flags: ∅
        │   │           ├── opening_loc: (1,23)-(1,24) = "'"
        │   │           ├── content_loc: (1,24)-(1,24) = ""
        │   │           ├── closing_loc: (1,24)-(1,25) = "'"
        │   │           └── unescaped: ""
        │   ├── closing_loc: ∅
        │   └── block: ∅
        └── @ CallNode (location: (5,0)-(5,25))
            ├── flags: ∅
            ├── receiver:
            │   @ StringNode (location: (5,0)-(5,9))
            │   ├── flags: ∅
            │   ├── opening_loc: (5,0)-(5,9) = "<<-TARGET"
            │   ├── content_loc: (6,0)-(6,0) = ""
            │   ├── closing_loc: (6,0)-(7,0) = "TARGET\r\n"
            │   └── unescaped: ""
            ├── call_operator_loc: (5,9)-(5,10) = "."
            ├── name: :gsub
            ├── message_loc: (5,10)-(5,14) = "gsub"
            ├── opening_loc: ∅
            ├── arguments:
            │   @ ArgumentsNode (location: (5,15)-(5,25))
            │   ├── flags: ∅
            │   └── arguments: (length: 2)
            │       ├── @ RegularExpressionNode (location: (5,15)-(5,21))
            │       │   ├── flags: forced_us_ascii_encoding
            │       │   ├── opening_loc: (5,15)-(5,16) = "/"
            │       │   ├── content_loc: (5,16)-(5,20) = "^\\s{"
            │       │   ├── closing_loc: (5,20)-(5,21) = "/"
            │       │   └── unescaped: "^\\s{"
            │       └── @ StringNode (location: (5,23)-(5,25))
            │           ├── flags: ∅
            │           ├── opening_loc: (5,23)-(5,24) = "'"
            │           ├── content_loc: (5,24)-(5,24) = ""
            │           ├── closing_loc: (5,24)-(5,25) = "'"
            │           └── unescaped: ""
            ├── closing_loc: ∅
            └── block: ∅