- DOCUMENT@0..33
    - OPERATION_DEFINITION@0..33
        - OPERATION_TYPE@0..5
            - query_KW@0..5 "query"
        - WHITESPACE@5..6 " "
        - NAME@6..9
            - IDENT@6..9 "Foo"
        - VARIABLE_DEFINITIONS@9..20
            - L_PAREN@9..10 "("
            - VARIABLE_DEFINITION@10..19
                - VARIABLE@10..14
                    - DOLLAR@10..11 "$"
                    - NAME@11..14
                        - IDENT@11..14 "bar"
                - COLON@14..15 ":"
                - WHITESPACE@15..16 " "
                - NAMED_TYPE@16..19
                    - NAME@16..19
                        - IDENT@16..19 "Int"
            - R_PAREN@19..20 ")"
        - WHITESPACE@20..21 " "
        - SELECTION_SET@21..33
            - L_CURLY@21..22 "{"
            - WHITESPACE@22..27 "\n    "
            - FIELD@27..31
                - NAME@27..31
                    - IDENT@27..31 "name"
            - WHITESPACE@31..32 "\n"
            - R_CURLY@32..33 "}"
recursion limit: 500, high: 1