code: public void setGatewayGroups(java.util.Collection<GatewayGroupSummary> gatewayGroups) {
          if (gatewayGroups == null) {
              this.gatewayGroups = null;
              return;
          }
  
          this.gatewayGroups = new java.util.ArrayList<GatewayGroupSummary>(gatewayGroups);
      }
docs: <p>
  The gateway groups in the list.
  </p>
  
  @param gatewayGroups
  The gateway groups in the list.