serialize method

@override BsonBinary serialize()

Implementation

@override
BsonBinary serialize() {
  var buffer = BsonBinary(messageLength);
  writeMessageHeaderTo(buffer);
  buffer.writeInt(flags);
  _collectionFullName?.packValue(buffer);
  buffer.writeInt(numberToSkip);
  buffer.writeInt(numberToReturn);
  _query.packValue(buffer);
  if (_fields != null) {
    _fields!.packValue(buffer);
  }
  buffer.offset = 0;
  return buffer;
}