@ ProgramNode (location: (2,9)-(2,75))
├── locals: []
└── statements:
    @ StatementsNode (location: (2,9)-(2,75))
    └── body: (length: 1)
        └── @ StringNode (location: (2,9)-(2,75))
            ├── flags: forced_utf8_encoding
            ├── opening_loc: (2,9)-(2,10) = "\""
            ├── content_loc: (2,10)-(2,74) = "\\xD0\\xBF\\xD1\\x80\\xD0\\xBE\\xD0\\xB2\\xD0\\xB5\\xD1\\x80\\xD0\\xBA\\xD0\\xB0"
            ├── closing_loc: (2,74)-(2,75) = "\""
            └── unescaped: "проверка"