SOURCE_FILE@0..93
  COMMENT@0..60 "// https://github.com ..."
  WHITESPACE@60..62 "\n\n"
  COMMENT@62..70 "//! docs"
  WHITESPACE@70..71 "\n"
  MODULE@71..93
    COMMENT@71..82 "// non-docs"
    WHITESPACE@82..83 "\n"
    MOD_KW@83..86 "mod"
    WHITESPACE@86..87 " "
    NAME@87..90
      IDENT@87..90 "foo"
    WHITESPACE@90..91 " "
    ITEM_LIST@91..93
      L_CURLY@91..92 "{"
      R_CURLY@92..93 "}"