anchor.diff:              completeBinary(Utils, Bin)
       end.
   
  --spec record2fix(FixRecord :: tuple(any()), 
  +-spec record2fix(FixRecord :: tuple(), 
                     ExtraBin :: binary(),
                     fix_version ()) -> binary() | not_valid.
   
  
positive.code:             completeBinary(Utils, list_to_binary([Bin, Bin2]))
      end.
  
  -spec format(tuple(any()), 
                     fix_version ()) -> string() | not_valid.
  format(#custom_message{standardHeader = Header, standardTrailer = Trailer},
         FixVersion) ->
  
negative.code:         false -> not_valid
      end.
  
  -spec record2fix(tuple(), fix_version ()) -> binary() | not_valid.
  record2fix(#custom_message{standardHeader = Header, standardTrailer = Trailer},
             FixVersion) ->
      Utils = get_util_module(FixVersion),
  