Unrecognized bulkdata Conformance elements

[sydneypemberton1986]

We are trying to use this library and are having trouble parsing Epic's conformance statement.

def test_use_smart_fhirclient() -> None:
    """We would like to replace our working FHIR auth code with `smart-on-fhir`'s
    `fhirclient` package.

    Unfortunately, [Epic's Conformance][1] elements of type [group export][2] are not
    recognized by this library.

    These can be hacked around by editing the library to set `strict=False` for the
    constructors of `CapabilityStatement` and `CapabilityStatementRestResource`.
    Even after setting those we are getting  getting a 401, so perhaps our code is
    simply off.

    [1]: https://apporchard.epic.com/interconnect-aocurprd-oauth/api/FHIR/R4/metadata
    [2]: http://hl7.org/fhir/uv/bulkdata/OperationDefinition/group-export
    """

    from fhirclient.client import FHIRClient
    from fhirclient.models.encounter import Encounter

    settings = {
        "app_id": get_client_id(),  # a UUID provided by Epic AppOrchard
        "app_secret": get_private_key(),  # an RSA private key
        "api_base": "https://apporchard.epic.com/interconnect-aocurprd-oauth/api/FHIR/R4"
    }
    client = FHIRClient(settings=settings)
    client.prepare()

    encounter_id = "encounter1"  # our code uses an actual valid encounter id
    Encounter.read(encounter_id, client.server)

Running this gives following error during prepare:

Non-optional property "interaction" on <models.capabilitystatement.CapabilityStatementRestResource object at 0x10a9d14c0> is missing'
Superfluous entry "operation" in data for <models.capabilitystatement.CapabilityStatementRestResource object at 0x10a9d14c0>
Non-optional property "acceptUnknown" on <models.capabilitystatement.CapabilityStatement object at 0x10a862970> is missing'