code: @Override
      public void updateDeployments(Iterable<Deployment> deployments) {
          Deployment oldDeployment = deploymentColumn.getSelectedItem();
          Deployment newDeployment = null;
  
          if (oldDeployment != null) {
              for (Deployment d : deployments) {
                  if (d.getName().equals(oldDeployment.getName())) {
                      newDeployment = d;
                  }
              }
          }
          deploymentColumn.updateFrom(Lists.newArrayList(deployments), newDeployment);
      }
docs: ------------------------------------------------------ update columns