public Builder addRoute(@NonNull IpAddress address) {
            mConfig.routes.add(address);
            return this;
        }
Add a network route to the VPN interface. Both IPv4 and IPv6 routes are supported.

Adding a route implicitly allows traffic from that address family (i.e., IPv4 or IPv6)
to be routed over the VPN.

@param address IPv4 or IPv6 address.
@return this {@link Builder} object to facilitate chaining method calls.
netbare-core/src/main/java/com/github/megatronking/netbare/NetBareConfig.java