docs: public DescribeVirtualInterfacesResult withVirtualInterfaces(VirtualInterface... virtualInterfaces) {
          if (this.virtualInterfaces == null) {
              setVirtualInterfaces(new com.amazonaws.internal.SdkInternalList<VirtualInterface>(virtualInterfaces.length));
          }
          for (VirtualInterface ele : virtualInterfaces) {
              this.virtualInterfaces.add(ele);
          }
          return this;
      }