final IHLLMetadata metadata = schemaVersion.readMetadata(bytes);
final HLLType type = metadata.HLLType();
final int regwidth = metadata.registerWidth();
final int log2m = metadata.registerCountLog2();
final boolean sparseon = metadata.sparseEnabled();
final int expthresh;
if(metadata.explicitAuto()) {
expthresh = -1;
} else if(metadata.explicitOff()) {