func (s *Series) GetEnd() float64 {
	if s == nil || s.End == nil {
		return 0
	}
	return *s.End
}
func (s *Series) GetEnd() float64 {
	if s == nil || s.End == nil {
		return 0
	}
	return *s.End
}
// GetEnd returns the End field if non-nil, zero value otherwise.