When the PulsoxymetrieObservationConverter returns an empyt obs an infinite loop is executed

[SevKohler]

I already fixed this by adding a Nullflavour instead of nothing, also the modelers will change the value in order to support the data absent reason.
Nevertheless, an infinite loop should not happen here, instead an error or else is to be returned when mapping this mapping.
The fhir bridge is just executing a loop which you will see when debuging, im not sure if this is an error of ehrbase or the SDK client.

{
    "resourceType": "Observation",
    "id": "6fa9e2be-d15a-4e77-81fc-056dda521875",
    "meta": {
        "profile": [
            "https://www.netzwerk-universitaetsmedizin.de/fhir/StructureDefinition/oxygen-saturation"
        ]
    },
    "status": "final",
    "category": [
        {
            "coding": [
                {
                    "system": "http:https://terminology.hl7.org/CodeSystem/observation-category",
                    "code": "vital-signs"
                }
            ]
        }
    ],
    "code": {
        "coding": [
            {
                "system": "http:https://loinc.org",
                "code": "2708-6",
                "display": "Oxygen saturation in Arterial blood"
            }
        ],
        "text": "Oxygen saturation in Arterial blood"
    },
    "subject": {
        "identifier": {
            "system": "urn:ietf:rfc:4122",
            "value": "297a5992-333e-4e44-a93b-15262e2e8db5"
        }
    },
    "effectiveDateTime": "2020-09-21",
    "dataAbsentReason": {
        "coding": [
            {
                "system": "http:https://terminology.hl7.org/CodeSystem/data-absent-reason",
                "code": "unknown",
                "display": "Unknown"
            }
        ]
    }
}

[SevKohler]

@subigre see here