func (cmp Cmp) WithRange(end string) Cmp {
	cmp.RangeEnd = []byte(end)
	return cmp
}
func (cmp Cmp) WithRange(end string) Cmp {
	cmp.RangeEnd = []byte(end)
	return cmp
}
func ( cmp Cmp ) WithRange ( end string ) Cmp { cmp . RangeEnd = [ ] byte ( end ) return cmp }
// WithRange sets the comparison to scan the range [key, end).
WithRange sets the comparison to scan the range [ key end ) .