Caused by: java.lang.IllegalArgumentException: Resource data must be materialized to be cached (need more than just an 'href' attribute).
at com.stormpath.sdk.lang.Assert.isTrue(Assert.java:33) ~[stormpath-sdk-api-0.8.0.jar:0.8.0]
at com.stormpath.sdk.impl.ds.DefaultDataStore.cache(DefaultDataStore.java:329) ~[stormpath-sdk-impl-0.8.0.jar:0.8.0]
at com.stormpath.sdk.impl.ds.DefaultDataStore.save(DefaultDataStore.java:263) ~[stormpath-sdk-impl-0.8.0.jar:0.8.0]
at com.stormpath.sdk.impl.ds.DefaultDataStore.create(DefaultDataStore.java:230) ~[stormpath-sdk-impl-0.8.0.jar:0.8.0]
at com.stormpath.sdk.impl.authc.BasicAuthenticator.authenticate(BasicAuthenticator.java:65) ~[stormpath-sdk-impl-0.8.0.jar:0.8.0]
at com.stormpath.sdk.impl.application.DefaultApplication.authenticateAccount(DefaultApplication.java:183) ~[stormpath-sdk-impl-0.8.0.jar:0.8.0]