void Add(VTableFixups fixups)
 {
     if (fixups is null)
     {
         return;
     }
     foreach (var fixup in fixups)
     {
         foreach (var method in fixup)
         {
             Push(method);
         }
     }
 }
 void Add(VTableFixups vtf)
 {
     if (vtf is null)
     {
         return;
     }
     foreach (var fixup in vtf)
     {
         foreach (var method in fixup)
         {
             Add(method);
         }
     }
 }