code: public void setUnassignedIpv6Addresses(java.util.Collection<String> unassignedIpv6Addresses) {
          if (unassignedIpv6Addresses == null) {
              this.unassignedIpv6Addresses = null;
              return;
          }
  
          this.unassignedIpv6Addresses = new com.amazonaws.internal.SdkInternalList<String>(unassignedIpv6Addresses);
      }
docs: <p>
  The IPv6 addresses that have been unassigned from the network interface.
  </p>
  
  @param unassignedIpv6Addresses
  The IPv6 addresses that have been unassigned from the network interface.