Three
constructor(applicationServer: ThreeTierVirtualInstanceThreeTierConfigurationResourceNamesApplicationServer? = null, centralServer: ThreeTierVirtualInstanceThreeTierConfigurationResourceNamesCentralServer? = null, databaseServer: ThreeTierVirtualInstanceThreeTierConfigurationResourceNamesDatabaseServer? = null, sharedStorage: ThreeTierVirtualInstanceThreeTierConfigurationResourceNamesSharedStorage? = null)