Int identifiers

[Nelly-Barret]

For now, I build resource identifiers like this:

{
    identifier: { value: 'ExaminationRecord/155' },
    resourceType: 'ExaminationRecord',
    ....
}

I am thinking on shifting to:

{
    identifier: { value: 155 },
    resourceType: 'ExaminationRecord',
    ....
}

I first need to check whether FHIR can handle int identifiers or not. In any case, this might be better to have just the int identifier because:

1. This can be easily converted to int (as opposed to ExaminationRecord/X which we have to split)
2. This is redundant with the resource type

However, building this Resource/Id identifier when we need it might be costly in the end. To be seen