added Is comment
added Is comment

dvln/objx,onrik/objx,pki-io/objx,stretchr/objx,onrik/objx,yxd-hde/objx,yxd-hde/objx,dvln/objx,jmptrader/objx,jmptrader/objx,pki-io/objx,outrightmental/go-objx,stretchr/objx,outrightmental/go-objx