code: public void setDesiredDeliveryMediums(java.util.Collection<String> desiredDeliveryMediums) {
          if (desiredDeliveryMediums == null) {
              this.desiredDeliveryMediums = null;
              return;
          }
  
          this.desiredDeliveryMediums = new java.util.ArrayList<String>(desiredDeliveryMediums);
      }
docs: <p>
  Specify <code>"EMAIL"</code> if email will be used to send the welcome message. Specify <code>"SMS"</code> if the
  phone number will be used. The default value is <code>"SMS"</code>. More than one value can be specified.
  </p>
  
  @param desiredDeliveryMediums
  Specify <code>"EMAIL"</code> if email will be used to send the welcome message. Specify <code>"SMS"</code>
  if the phone number will be used. The default value is <code>"SMS"</code>. More than one value can be
  specified.
  @see DeliveryMediumType