@class PGGraphMomentNodeCollection, PGGraphLanguageNodeCollection, PGGraphAddressNodeCollection; @interface PGGraphLocationCountryNodeCollection : PGGraphNamedLocationNodeCollection @property (readonly, nonatomic) PGGraphAddressNodeCollection *addressNodes; @property (readonly, nonatomic) PGGraphMomentNodeCollection *momentNodes; @property (readonly, nonatomic) PGGraphLanguageNodeCollection *languageNodes; + (Class)nodeClass; @end