- DOCUMENT@0..35
    - UNION_TYPE_DEFINITION@0..35
        - union_KW@0..5 "union"
        - WHITESPACE@5..6 " "
        - NAME@6..19
            - IDENT@6..18 "SearchResult"
            - WHITESPACE@18..19 " "
        - UNION_MEMBER_TYPES@19..35
            - EQ@19..20 "="
            - WHITESPACE@20..21 " "
            - NAMED_TYPE@21..27
                - NAME@21..27
                    - IDENT@21..26 "Photo"
                    - WHITESPACE@26..27 " "
            - PIPE@27..28 "|"
            - WHITESPACE@28..29 " "
            - NAMED_TYPE@29..35
                - NAME@29..35
                    - IDENT@29..35 "Person"
