// common initialization routines used by the constructors
private void Initialize()
{
_byteBuffer = new byte[MaxBlockSize];
_sequenceBuffer = new char[BamConstants.MaxReadLength];
_baseLookupTable = "=ACMGRSVTWYHKDBN".ToCharArray();
_referenceNameToIndex = new Dictionary <string, int>();
_referenceIndex = new List <GenomeMetadata.SequenceMetadata>();
_alignmentsOffset = 0;
_index = new BamIndex();
}