- DOCUMENT@0..21
    - DIRECTIVE_DEFINITION@0..21
        - directive_KW@0..9 "directive"
        - WHITESPACE@9..10 " "
        - AT@10..11 "@"
        - NAME@11..18
            - IDENT@11..18 "example"
        - WHITESPACE@18..19 " "
        - on_KW@19..21 "on"
- ERROR@21:21 "expected valid Directive Location" EOF
recursion limit: 500, high: 0