cookie.go
func (c *Cookie) SetValueBytes(value []byte) {
	c.value = append(c.value[:0], value...)
}
func (c *Cookie) SetValueBytes(value []byte) {
	c.value = append(c.value[:0], value...)
}
func ( c * Cookie ) SetValueBytes ( value [ ] byte ) { c . value = append ( c . value [ : 0 ] , value ... ) }
// SetValueBytes sets cookie value.
SetValueBytes sets cookie value .