@Override
    public byte[] encodeDataFields(List<FieldDefinition> fieldDefinitions, Map<String, Object> fieldValues) {

        // TODO Exercise 3 add code here

        ArrayList<byte[]> turboGazariOOD = new ArrayList<byte[]>();

        for(int i=0; i<fieldDefinitions.size(); i++) {
            if(fieldDefinitions.get(i).getType().getByteLength()!=-1) {

                ByteBuffer byteBuffer = ByteBuffer.allocate(fieldDefinitions.get(i).getType().getByteLength());
                Object currentFieldValue = fieldValues.get(fieldDefinitions.get(i).getName());
                switch(fieldDefinitions.get(i).getType()) {
                case Byte:
                    turboGazariOOD.add(byteBuffer.put((byte) currentFieldValue).array());
                    break;
                case Short:
                    turboGazariOOD.add(byteBuffer.putShort((short) currentFieldValue).array());
                    break;
                case Int:
                    turboGazariOOD.add(byteBuffer.putInt((int) currentFieldValue).array());
                    break;
                case Long:
                    turboGazariOOD.add(byteBuffer.putLong((long) currentFieldValue).array());
                    break;
                case Float:
                    turboGazariOOD.add(byteBuffer.putFloat((float) currentFieldValue).array());
                    break;
                case Double:
                    turboGazariOOD.add(byteBuffer.putDouble((double) currentFieldValue).array());
                    break;
                }

            }
        }

        int length = 0;
        for(byte[] b : turboGazariOOD) length+=b.length;

        if(length!=0)
        {
            byte[] masivche = new byte[length];
            int counter = 0;
            for(byte[] b : turboGazariOOD) {
                for(int i=0; i<b.length; i++) {
                    masivche[counter++] = b[i];
                }
            }
            return masivche;
        }
        else
        {
            return null;
        }
    }