code: private double getY() {
          double res;
          switch (model().getEventModel().eventType()) {
              case CREATE_COMMAND_FACADE:
              case CREATE_COMMAND:
                  res = -200 * Math.sin(Math.PI / 2);
                  break;
              case CREATE_GLOBAL_FACADE:
              case CREATE_APPLICATION:
              case CREATE_NOTIFIER:
                  res = 0;
                  break;
              case CREATE_SERVICE_FACADE:
              case CREATE_UI_FACADE:
              case CREATE_MODEL:
              case CREATE_SERVICE:
                  res = +200 * Math.sin(Math.PI / 6);
                  break;
              default:
                  res = 50;
          }
          return res;
      }
docs: Return the y coordinate.
  
  @return the y value