func Tail(r feat.Range, o feat.Orientation) int {
	if o == feat.Forward {
		return r.End() - 1
	} else if o == feat.Reverse {
		return r.Start()
	}
	panic("htsdb: orientation must be forward or reverse")
}
// Tail returns the tail coordinate of r depending on orientation.
Tail returns the tail coordinate of r depending on orientation.
// Tail returns the tail coordinate of r depending on orientation .
func Tail(r feat.Range, o feat.Orientation) int {
	if o == feat.Forward {
		return r.End() - 1
	} else if o == feat.Reverse {
		return r.Start()
	}
	panic("htsdb: orientation must be forward or reverse")
}
func Tail ( r feat . Range , o feat . Orientation ) int { if o == feat . Forward { return r . End ( ) - 1 } else if o == feat . Reverse { return r . Start ( ) } panic ( " " ) }
Tail returns the tail coordinate of r depending on orientation.
Tail returns the tail coordinate of r depending on orientation .