Include partner-identifications in outbox-service (REST)

For the inbox/outbox Link Rest API, the response from the methode 'get-files' should contains the array of PartnerIdentifications.
The PartnerIdentifications should be connected to each document that will be returned.

The array should look like this.

"partnerIdentifications": {
{
"qualifier": "GLN"
"value": "5700xxxxxx"
}
}