Neo4j java-rest-binding bug

SandboxApp.java

public class SandboxApp 
{
    private static Node node1;
    private static RelationshipType relType = DynamicRelationshipType.withName("BEHOLD");

    public static void main( String[] args ) throws ParseException, JSONException
    {
        RestAPI restAPI = new RestAPI("http://localhost:7474/db/data");
    	
        node1 = restAPI.createNode(map());
    	
        restAPI.executeBatch(new BatchCallback<Void>() {
        	
            @Override
            public Void recordBatch(RestAPI batchRestApi) {
           	Node node2 = batchRestApi.createNode(map());
                
                // Throws RuntimeException from RestAPI.java, line 135:
            	node1.createRelationshipTo(node2, relType);
                // WORKAROUND - the following succeeds:
                // (new RestNode(((RestNode)node1).getUri(), batchRestApi)).createRelationshipTo(node2, relType);
                return null;
            }
            
        });
    }
}