public override int FillFields(byte[] data, int offset, IEscherRecordFactory recordFactory){int bytesRemaining = ReadHeader(data, offset);int pos = offset + 8;int size = 0;field_1_rectX1 = LittleEndian.GetInt(data, pos + size); size += 4;field_2_rectY1 = LittleEndian.GetInt(data, pos + size); size += 4;field_3_rectX2 = LittleEndian.GetInt(data, pos + size); size += 4;field_4_rectY2 = LittleEndian.GetInt(data, pos + size); size += 4;bytesRemaining -= size;if (bytesRemaining != 0) throw new RecordFormatException("Expected no remaining bytes but got " + bytesRemaining);return 8 + size + bytesRemaining;}