- DOCUMENT@0..30
    - INPUT_OBJECT_TYPE_EXTENSION@0..30
        - extend_KW@0..6 "extend"
        - WHITESPACE@6..7 " "
        - input_KW@7..12 "input"
        - WHITESPACE@12..13 " "
        - INPUT_FIELDS_DEFINITION@13..30
            - L_CURLY@13..14 "{"
            - WHITESPACE@14..19 "\n    "
            - INPUT_VALUE_DEFINITION@19..28
                - NAME@19..20
                    - IDENT@19..20 "a"
                - COLON@20..21 ":"
                - WHITESPACE@21..22 " "
                - NAMED_TYPE@22..28
                    - NAME@22..28
                        - IDENT@22..28 "String"
            - WHITESPACE@28..29 "\n"
            - R_CURLY@29..30 "}"
- ERROR@13:14 "expected a Name" {
recursion limit: 500, high: 0