AdminConfigurationManagerRegisterProxy Method
            
            Registers a hidden vault extension method with the vault application.
            This will instruct the vault application to route a VaultExtensionMethod
            called like below to this instance's 
            
RouteRequest(EventHandlerEnvironment)
            method.
            VaultExtensionMethodOperations.ExecuteVaultExtensionMethod( 
            	"<VaultAppExtMethod>, "[ \"<this.ProxyMethod>\", "<command>", ... ]" )