ArrayPort should only send each beginGroup once.
ArrayPort should only send each beginGroup once.

noflo/noflo,lxfschr/noflo,lxfschr/noflo,saurabhsood91/noflo,trustmaster/noflo,trustmaster/noflo,jonnor/noflo,npmcomponent/noflo-noflo,jonnor/noflo,saurabhsood91/noflo