Alias GffValue.Value

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