Warlock, the Noble Genie: The collector’s vessel power. Is it assumed that you’re binding a summoned creature or a familiar?

Re: The Noble Genie patron.
The collector's vessel power. Is it assumed that you're binding a summoned creature or a familiar or a party member? I'm confused by this.

— Madrun Badrun (@VargBloodeagle) January 15, 2020

Any willing creature. Familiar, ally, whatever.

— Dan Dillon 👥 (@Dan_Dillon_1) January 15, 2020