src/main/java/org/jboss/util/graph/Graph.java
public boolean addVertex(Vertex<T> v)
   {
      if( verticies.containsValue(v) == false )
      {
         verticies.put(v.getName(), v);
         return true;
      }
      return false;
   }
public boolean addVertex(Vertex<T> v)
   {
      if( verticies.containsValue(v) == false )
      {
         verticies.put(v.getName(), v);
         return true;
      }
      return false;
   }
Add a vertex to the graph
@param v the Vertex to add
@return true if the vertex was added, false if it was already in the graph.