func (w *WidgetMetadata) GetExpression() string {
	if w == nil || w.Expression == nil {
		return ""
	}
	return *w.Expression
}
func (w *WidgetMetadata) GetExpression() string {
	if w == nil || w.Expression == nil {
		return ""
	}
	return *w.Expression
}
// GetExpression returns the Expression field if non-nil, zero value otherwise.