Changing graph to use Vertex class

src/main/java/Vertex.java

@@ -1,16 +1,20 @@
 
 
 public class Vertex {
+    private final SequenceType type;
     private final Integer vertexLabel;
     private final Integer sequence;
     private final Integer occupancy;
 
-    public Vertex(Integer vertexLabel, Integer sequence, Integer occupancy) {
+    public Vertex(SequenceType type, Integer sequence, Integer occupancy, Integer vertexLabel) {
+        this.type = type;
         this.vertexLabel = vertexLabel;
         this.sequence = sequence;
         this.occupancy = occupancy;
     }
 
+    public SequenceType getType() { return type; }
+
     public Integer getVertexLabel() { return vertexLabel; }
 
     public Integer getSequence() {