     associatedtype VertexType
     associatedtype GraphType
     var term: Term { get }
-    
+    var graph: GraphType { get }
+
     func listElements() throws -> [VertexType]
     func incoming(_ predicate: Term) throws -> [VertexType]
     func outgoing(_ predicate: Term) throws -> [VertexType]

        public typealias GraphType = Graph<QS>

        var store: QS
        var graph: Graph<QS>
        public var term: Term
        
        public func listElements() throws -> [GraphVertex<QS>] {

    }
}

extension QuadStoreProtocol {
    public func graph(_ iri: Term) -> GraphAPI.Graph<Self> {
       return GraphAPI.Graph(store: self, term: iri)
    }
}
