Optionalcountthe FHIR resource type that is contained in the file. Each file SHALL contain resources of only one type, but a server MAY create more than one file for each resource type returned. The number of resources contained in a file MAY vary between servers. If no data are found for a resource, the server SHOULD NOT return an output item for that resource in the response. These rules apply only to top-level resources within the response; as always in FHIR, any resource MAY have a "contained" array that includes referenced resources of other types.
the path to the file. The format of the file SHOULD reflect that requested in the _outputFormat parameter of the initial kick-off request.
the number of resources in the file, represented as a JSON number.