code: public void setActivities(java.util.Collection<Activity> activities) {
          if (activities == null) {
              this.activities = null;
              return;
          }
  
          this.activities = new com.amazonaws.internal.SdkInternalList<Activity>(activities);
      }
docs: <p>
  The activities related to moving instances out of <code>Standby</code> mode.
  </p>
  
  @param activities
  The activities related to moving instances out of <code>Standby</code> mode.