Sets the batch size of records to look up for this record box.
        
        :param      size | <int>

def setBatchSize(self, size):
        """
        Sets the batch size of records to look up for this record box.
        
        :param      size | <int>
        """
        self._batchSize = size
        try:
            self._worker.setBatchSize(size)
        except AttributeError:
            pass