code: public java.util.List<String> getAddSecurityGroupIds() {
          if (addSecurityGroupIds == null) {
              addSecurityGroupIds = new com.amazonaws.internal.SdkInternalList<String>();
          }
          return addSecurityGroupIds;
      }
docs: <p>
  (Interface endpoint) One or more security group IDs to associate with the network interface.
  </p>
  
  @return (Interface endpoint) One or more security group IDs to associate with the network interface.