- DOCUMENT@0..25
    - SCALAR_TYPE_EXTENSION@0..25
        - extend_KW@0..6 "extend"
        - WHITESPACE@6..7 " "
        - scalar_KW@7..13 "scalar"
        - WHITESPACE@13..14 " "
        - DIRECTIVES@14..25
            - DIRECTIVE@14..25
                - AT@14..15 "@"
                - NAME@15..25
                    - IDENT@15..25 "deprecated"
- ERROR@14:15 "expected a Name" @
recursion limit: 500, high: 0