anchor.diff:  		    { Schema, zlists:expand(ZInstances) }
   	    end),
       ?assertMatch( 
  -       {Schema = #avro_record{},
  +       {_Schema = #avro_record{},
   	_Instances = 
   	   [
   	    _Instance = [<<"0000">>, <<"Optimus">>,<<"Prime">> |_] | _ 
  
positive.code: parse_transformers_ocf_test() ->
      Data = eavro:read_ocf("../test/data/transformers.avro"),
      ?assertMatch( 
         {Schema = #avro_record{},
  	_Blocks = 
  	   [_Block = 
  		[ _Rec1 = [<<"0000">>, <<"Optimus">>,<<"Prime">> |_] | _ ]
  
negative.code: 		  fun eavro_util:std_hook/2 ),
  		Cnt = eavro_ocf_zcodec:read_ocf_with(
  		  F2, 
  		  fun(_Schema, ZInstances) ->
  			  zlists:count(ZInstances)
  		  end),
  		?assert( Cnt > 0 )
  