@ ProgramNode (location: (0...48))
├── locals: []
└── statements:
    @ StatementsNode (location: (0...48))
    └── body: (length: 2)
        ├── @ StringNode (location: (0...8))
        │   ├── opening_loc: (0...8) = "<<-EOFOO"
        │   ├── content_loc: (9...28) = "\\n\\n\\n\\n\\n\\n\\n\\n\\n\n"
        │   ├── closing_loc: (28...34) = "EOFOO\n"
        │   └── unescaped: "\n\n\n\n\n\n\n\n\n\n"
        └── @ ClassNode (location: (35...48))
            ├── locals: []
            ├── class_keyword_loc: (35...40) = "class"
            ├── constant_path:
            │   @ ConstantReadNode (location: (41...44))
            │   └── name: :Foo
            ├── inheritance_operator_loc: ∅
            ├── superclass: ∅
            ├── body: ∅
            ├── end_keyword_loc: (45...48) = "end"
            └── name: :Foo
