+ /**
+ * Retrieve a collection of {@link Vertex} objects which match the supplied
+ * type label and filter properties.
+ *
+ * @param type
+ * - The vertex type that we want to retrieve.
+ * @param filter
+ * - The parameters to filter our results by.
+ * @param properties
+ * - The properties to retrieve with the vertex
+ * @return - A collection of vertices.
+ * @throws CrudException
+ */
+ public List<Vertex> getVertices(String type, Map<String, Object> filter, HashSet<String> properties) throws CrudException;
+