SOURCE_FILE@0..34
  FN@0..34
    FN_KW@0..2 "fn"
    WHITESPACE@2..3 " "
    NAME@3..7
      IDENT@3..7 "test"
    PARAM_LIST@7..9
      L_PAREN@7..8 "("
      R_PAREN@8..9 ")"
    WHITESPACE@9..10 " "
    WHERE_CLAUSE@10..31
      WHERE_KW@10..15 "where"
      WHITESPACE@15..16 " "
      WHERE_PRED@16..31
        TUPLE_TYPE@16..26
          L_PAREN@16..17 "("
          PATH_TYPE@17..20
            PATH@17..20
              PATH_SEGMENT@17..20
                NAME_REF@17..20
                  IDENT@17..20 "u64"
          COMMA@20..21 ","
          WHITESPACE@21..22 " "
          PATH_TYPE@22..25
            PATH@22..25
              PATH_SEGMENT@22..25
                NAME_REF@22..25
                  IDENT@22..25 "u64"
          R_PAREN@25..26 ")"
        COLON@26..27 ":"
        WHITESPACE@27..28 " "
        TYPE_BOUND_LIST@28..31
          TYPE_BOUND@28..31
            PATH_TYPE@28..31
              PATH@28..31
                PATH_SEGMENT@28..31
                  NAME_REF@28..31
                    IDENT@28..31 "Foo"
    WHITESPACE@31..32 " "
    BLOCK_EXPR@32..34
      L_CURLY@32..33 "{"
      R_CURLY@33..34 "}"