/**
* Get the network URL in case control and data is configured together otherwise null
* If it returns a non-null value, getControlUrl() and getDataUrl() have to return null.
* @return The network URL or null.
*/
/**
* Get the network URL in case control and data is configured together otherwise null
* If it returns a non-null value, getControlUrl() and getDataUrl() have to return null.
* @return The network URL or null.
*/