Alias GffField.Value

struct GffField
{
  // ...
  alias Value = std.variant.VariantN!(32L,ubyte,byte,ushort,short,uint,int,ulong,long,float,double,string,nwn.fastgff.GffResRef,nwn.fastgff.GffLocString,ubyte[],nwn.fastgff.GffStruct,nwn.fastgff.GffList);
  // ...
}