Returns the group order that should be set in the SAM header.
Returns the group order that should be set in the SAM header. None will cause GO to be unset.
Returns the sort order that should be set in the SAM header.
Function to generate the sort key for sorting records into this ordering.
The subsort string to be placed *after* the sort order in the SS tag.
Sets the appropriate fields in the SAM header for the order.
Returns the order's name.
Trait for specifying BAM orderings.