fn addOptionalString(s: *Serialize, opt_slice: ?[]const u8) !?Configuration.String s: *Serializeopt_slice: ?[]const u8794
795
796fn addOptionalString(s: *Serialize, opt_slice: ?[]const u8) !?Configuration.String {
return if (opt_slice) |slice| try s.wc.addString(slice) else null;
}