ResearchDefinition on the FHIR specification website.

The ResearchDefinition resource describes the conditional state (population and any exposures being compared within the population) and outcome (if specified) that the knowledge (evidence, assertion, recommendation) is about.

The body should be a list of valid JSON patches for ResearchDefinition. For example, to update a Slot status to busy, this would be the body:

[
  {
    op: 'replace',
    path: '/status',
    value: 'busy',
  },
],