extractId called after extractAttributes

[makepanic]

extractAttributes deletes keys from the payload object.
This means when calling extractId, the developer can only read the updated object.

The call order could be changed to allow extractId to use the full incoming object.
Datas json-api serializer does it like this:

      id:            this.extractId(modelClass, resourceHash),
      type:          this._extractType(modelClass, resourceHash),
      attributes:    this.extractAttributes(modelClass, resourceHash),
      relationships: this.extractRelationships(modelClass, resourceHash)