public Builder setConfigureIntent(@NonNull PendingIntent intent) {
            mConfig.configureIntent = intent;
            return this;
        }
Set the {@link PendingIntent} to an activity for users to configure the VPN connection.
If it is not set, the button to configure will not be shown in system-managed dialogs.

@param intent An Activity intent.
@return this {@link Builder} object to facilitate chaining method calls.
netbare-core/src/main/java/com/github/megatronking/netbare/NetBareConfig.java