anchor.diff:                 brod_kafka:decode(?API_KEY_FETCH, Bin3)),
   
     Topic1 = <<"t1">>,
  -  Topic2 = crypto:rand_bytes(10),
  +  Topic2 = random_bytes(),
     %% Topic2 = <<"t2">>,
     Topic3 = <<"t3">>,
     Partition1 = 1,
  
positive.code:   ErrorCodeDecoded2 = ?EC_UNKNOWN,
    HighWmOffset1 = 1,
    HighWmOffset2 = -1,
    K2 = crypto:rand_bytes(10),
    V2 = crypto:rand_bytes(10),
    %% K2 = <<"a">>,
    %% V2 = <<"b">>,
    Message1 = #message{ offset = 0
  
negative.code:   erlang:crc32(<<?i8(?MAGIC_BYTE), ?i8(?COMPRESS_NONE), ?i32((size(K))),
                   K/binary, ?i32((size(V))), V/binary>>).
  
  random_bytes() -> crypto:rand_bytes(random:uniform(1 bsl 16 - 1)).
  
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