[NTG-context] stoppers in section heading without having stoppers in references?

[Sanjoy Mahajan]

In MkIV, is there a way to get a stopper (e.g. ".") in the section
heading, along the lines of "1. First heading" but without a reference
to it having the stopper?  Thus, the reference should be just "In
Chapter 1 we learn", not "In Chapter 1. we learn"?

I have tried many variants of the following minimal example:

 \setuphead[chapter][sectionstopper=.]
 \definereferenceformat [inchapter] [text={Chapter~}]

 \starttext
 \chapter[one]{First heading}

 \input knuth

 \inchapter[one] we learn.

 \stoptext

-Sanjoy