marklogic-jena/src/main/java/com/marklogic/semantics/jena/MarkLogicDatasetGraph.java
public void mergeGraph(Node graphName, Graph graph) {
        checkIsOpen();
        sync();
        client.mergeGraph(graphName.getURI(), graph);
    }
public void mergeGraph(Node graphName, Graph graph) {
        checkIsOpen();
        sync();
        client.mergeGraph(graphName.getURI(), graph);
    }
Merges triples into a graph on the MarkLogic server. mergeGraph() is NOT
part of Jena's DatasetGraph interface.

@param graphName
The graph to merge with server state.
@param graph
The graph data.