SOURCE_FILE
  STRUCT
    STRUCT_KW "struct"
    WHITESPACE " "
    NAME
      IDENT "Foo"
    TUPLE_FIELD_LIST
      L_PAREN "("
      TUPLE_FIELD
        VISIBILITY
          PUB_KW "pub"
          VISIBILITY_INNER
            L_PAREN "("
            PATH
              PATH_SEGMENT
                NAME_REF
                  CRATE_KW "crate"
            R_PAREN ")"
        WHITESPACE " "
        MUT_RESTRICTION
          MUT_KW "mut"
          VISIBILITY_INNER
            L_PAREN "("
            PATH
              PATH_SEGMENT
                NAME_REF
                  SUPER_KW "super"
            R_PAREN ")"
        WHITESPACE " "
        PATH_TYPE
          PATH
            PATH_SEGMENT
              NAME_REF
                IDENT "i32"
      R_PAREN ")"
    SEMICOLON ";"
  WHITESPACE "\n"
