output: #fixed code
                                  @Test
      public void testLoadVertexProperties() {
          Vertex marko = this.sqlgGraph.addVertex(T.label, "Person", "name", "marko");
          this.sqlgGraph.tx().commit();
          marko = this.sqlgGraph.traversal().V(marko.id()).next();
          Assert.assertEquals("marko", marko.property("name").value());
      }
input: #vulnerable code 
                                  @Test
      public void testLoadVertexProperties() {
          Vertex marko = this.sqlgGraph.addVertex(T.label, "Person", "name", "marko");
          this.sqlgGraph.tx().commit();
          marko = this.sqlgGraph.v(marko.id());
          Assert.assertEquals("marko", marko.property("name").value());
      } 
                              #location 6 
                              #vulnerability type NULL_DEREFERENCE