protected static extern unsafe IntPtr TypedColumnReader_ReadBatchSpaced_FixedLenByteArray(
IntPtr columnReader, long batchSize, short *defLevels, short *repLevels, FixedLenByteArray *values, byte *validBits, long validBitsOffset,
out long levelsRead, out long valuesRead, out long nullCount, out long returnValue);
protected static extern unsafe IntPtr TypedColumnWriter_WriteBatchSpaced_FixedLenByteArray(
IntPtr columnWriter, long numValues, short *defLevels, short *repLevels, byte *validBits, long validBitsOffset, FixedLenByteArray *values);
protected static extern unsafe IntPtr TypedColumnReader_ReadBatch_FixedLenByteArray(
IntPtr columnReader, long batchSize, short *defLevels, short *repLevels, FixedLenByteArray *values, out long valuesRead, out long levelsRead);
protected static extern unsafe IntPtr TypedColumnWriter_WriteBatch_FixedLenByteArray(
IntPtr columnWriter, long numValues, short *defLevels, short *repLevels, FixedLenByteArray *values);