support adding fields to a featureset that already has entities
support adding fields to a featureset that already has entities

seanisom/vtp,nakijun/vtp,nakijun/vtp,nakijun/vtp,seanisom/vtp,markraz/vtp,markraz/vtp,seanisom/vtp,markraz/vtp,seanisom/vtp,nakijun/vtp,seanisom/vtp,nakijun/vtp,markraz/vtp,markraz/vtp