SOURCE_FILE
  STRUCT
    STRUCT_KW "struct"
    WHITESPACE " "
    NAME
      IDENT "Foo"
    WHITESPACE " "
    RECORD_FIELD_LIST
      L_CURLY "{"
      WHITESPACE " "
      RECORD_FIELD
        MUT_RESTRICTION
          MUT_KW "mut"
          VISIBILITY_INNER
            L_PAREN "("
            PATH
              PATH_SEGMENT
                NAME_REF
                  SUPER_KW "super"
            R_PAREN ")"
        WHITESPACE " "
        UNSAFE_KW "unsafe"
        WHITESPACE " "
        NAME
          IDENT "i"
        COLON ":"
        WHITESPACE " "
        PATH_TYPE
          PATH
            PATH_SEGMENT
              NAME_REF
                IDENT "i32"
      WHITESPACE " "
      R_CURLY "}"
  WHITESPACE "\n"
