@interface CNMutableContactKeyVector : CNContactKeyVector + (id)new; + (id)freezeIfClassIsImmutable:(id)a0; - (id)init; - (void)unionKeyVector:(id)a0; - (void)intersectKeyVector:(id)a0; - (id)freeze; - (void)addKey:(id)a0; - (void)minusKeyVector:(id)a0; - (void)subtractKey:(id)a0; - (id)initWithKeyVector:(id)a0; - (void)addKeys:(id)a0; - (id)copyWithZone:(struct _NSZone { } *)a0; - (void)subtractKeys:(id)a0; @end