I recently had my basement remodeled and the contractor put in plaster
(hard coat) walls instead of drywall. It was put in over blue board and
has small, textured swirls in it. I have a small indentation in one of
the walls caused by a door knob being pushed into it. My question is
how do I repair this type of wall and have the finished product match
the texturing already on the walls?

Thanks.