SOURCE_FILE@0..22
  TRAIT@0..21
    TRAIT_KW@0..5 "trait"
    WHITESPACE@5..6 " "
    NAME@6..7
      IDENT@6..7 "T"
    WHITESPACE@7..8 " "
    ASSOC_ITEM_LIST@8..21
      L_CURLY@8..9 "{"
      WHITESPACE@9..10 " "
      FN@10..19
        FN_KW@10..12 "fn"
        WHITESPACE@12..13 " "
        NAME@13..16
          IDENT@13..16 "foo"
        PARAM_LIST@16..18
          L_PAREN@16..17 "("
          R_PAREN@17..18 ")"
        SEMICOLON@18..19 ";"
      WHITESPACE@19..20 " "
      R_CURLY@20..21 "}"
  WHITESPACE@21..22 "\n"