If-Match
header. For example, this patch will change the gender of the patient from MALE to FEMALE, but will only succeed if the etag matches e15be5a372b742ccac35518df7c9a784
and the gender is currently MALE.$diff
operation on the desired instance of the type. For example, to see the instructions it would take to turn patent 9fdb557d-2e2f-4fe5-a193-e1cf8cf49bc4
to 1c8c9aa3-abb8-48ee-992d-8f0c524ce40c
submitting the following request.