Gracfully handle optional resource references

  @AccessControl(resources = {
            "/{selected.host}/server-config=*",
            "opt://{selected.host}/server-config=*/system-property=*"},
            recursive = false)

leads to

Caused by: java.lang.AssertionError: Invalid token expression opt: at org.jboss.as.console.mbui.model.mapping.AddressMapping.asResource(AddressMapping.java:172) at org.jboss.as.console.mbui.dmr.ResourceAddress.<init>(ResourceAddress.java:27) at org.jboss.as.console.client.core.ReadRequiredResources.add(ReadRequiredResources.java:70)