Simply wrapps single AttributeStore and IdentityStore and pass all method invocations
<repository> <id>Sample Repository</id <class>org.picketlink.idm.impl.repository.WrapperIdentityStoreRepository</class> <external-config/> <default-identity-store-id>LDAP Store</default-identity-store-id> <default-attribute-store-id>LDAP Store</default-attribute-store-id> </repository>