Function spinRegisterSetReference 

pub unsafe extern "C" fn spinRegisterSetReference(
    hNode: spinNodeHandle,
    hRef: spinNodeHandle,
) -> spinError

Uses a second node as a reference for a register node @see spinError

@param hNode The register node that houses the reference @param hRef The reference node

@return spinError The error code; returns SPINNAKER_ERR_SUCCESS (or 0) for no error