@BeforeClass
 public void init() {
   SAMFileHeader header = ArtificialSAMUtils.createArtificialSamHeader(1, 1, 1000);
   read = ArtificialSAMUtils.createArtificialRead(header, "read1", 0, 1, BASES.length());
   read.setReadUnmappedFlag(true);
   read.setReadBases(new String(BASES).getBytes());
   read.setBaseQualityString(new String(QUALS));
 }