asDownlinkAwsGroundStationAgentEndpoint
Casts this CreateEndpointDetails as a DownlinkAwsGroundStationAgentEndpoint and retrieves its aws.sdk.kotlin.services.groundstation.model.DownlinkAwsGroundStationAgentEndpoint value. Throws an exception if the CreateEndpointDetails is not a DownlinkAwsGroundStationAgentEndpoint.