I developing an application on BB10 cascades.
I have contact A with attribute 'attr1' and contact B with attribute 'attr2'.
Next, i link contacts A and B.
When i receive contactdetails Cascades Api, it returns a contact A with attributes 'attr1' and 'attr2'.
How i can detect that attribute 'attr1' belongs to a contact A and attribute 'attr2' belongs to a contact B?