output: #fixed code
                                  @Test
      public void testPropertiesNotBeingCachedOnVertexOut() {
  
          Vertex v1 = this.sqlgGraph.addVertex(T.label, "Person");
          Vertex v2 = this.sqlgGraph.addVertex(T.label, "Car", "name", "a");
          Vertex v3 = this.sqlgGraph.addVertex(T.label, "Car", "name", "b");
          Vertex v4 = this.sqlgGraph.addVertex(T.label, "Car", "name", "c");
  
          v1.addEdge("car", v2);
          v1.addEdge("car", v3);
          v1.addEdge("car", v4);
  
          this.sqlgGraph.tx().commit();
  
          v1 = this.sqlgGraph.traversal().V(v1.id()).next();
          List<Vertex> cars = vertexTraversal(v1).out("car").toList();
          Assert.assertEquals(3, cars.size());
  
      }
input: #vulnerable code 
                                  @Test
      public void testPropertiesNotBeingCachedOnVertexOut() {
  
          Vertex v1 = this.sqlgGraph.addVertex(T.label, "Person");
          Vertex v2 = this.sqlgGraph.addVertex(T.label, "Car", "name", "a");
          Vertex v3 = this.sqlgGraph.addVertex(T.label, "Car", "name", "b");
          Vertex v4 = this.sqlgGraph.addVertex(T.label, "Car", "name", "c");
  
          v1.addEdge("car", v2);
          v1.addEdge("car", v3);
          v1.addEdge("car", v4);
  
          this.sqlgGraph.tx().commit();
  
          v1 = this.sqlgGraph.v(v1.id());
          List<Vertex> cars = vertexTraversal(v1).out("car").toList();
          Assert.assertEquals(3, cars.size());
  
      } 
                              #location 16 
                              #vulnerability type NULL_DEREFERENCE