docs: public void setCustomerGatewayIds(java.util.Collection<String> customerGatewayIds) {
          if (customerGatewayIds == null) {
              this.customerGatewayIds = null;
              return;
          }
  
          this.customerGatewayIds = new com.amazonaws.internal.SdkInternalList<String>(customerGatewayIds);
      }