MissingNamespaceException on openGraphOperations().publishActi on(..)

[YuvalRon]

When I try to publish an action through FacebookTemplate

this.facebook.openGraphOperations().publishAction("myaction", "myobject", this.getObjectUrl(myObject));

I get the following exception:

org.springframework.social.facebook.api.MissingNamespaceException: An application namespace is required to publish OpenGraph actions.
	at org.springframework.social.facebook.api.impl.OpenGraphTemplate.requireApplicationNamespace(OpenGraphTemplate.java:44)
	at org.springframework.social.facebook.api.impl.OpenGraphTemplate.publishAction(OpenGraphTemplate.java:35)

I don't know where should I configure the application namespace? I can't find it in Spring Social documentation.

Thanks,
Yuval