More IdentifierRef.Pair variants

src/gaemstone.ECS/IdRef.cs

@@ -26,14 +26,20 @@ public unsafe class IdRef
 
 	public static IdRef Pair(World world, Entity relation, Entity target)
 		=> new(world, Id.Pair(relation, target));
-	public static IdRef Pair(EntityRef relation, EntityRef target)
-		=> Pair(relation.World, relation, target);
-	public static IdRef Pair(EntityRef relation, Entity target)
-		=> Pair(relation.World, relation, target);
 	public static IdRef Pair(Entity relation, EntityRef target)
 		=> Pair(target.World, relation, target);
+	public static IdRef Pair(EntityRef relation, Entity target)
+		=> Pair(relation.World, relation, target);
+	public static IdRef Pair(EntityRef relation, EntityRef target)
+		=> Pair(relation.World, relation, target);
+
+	public static IdRef Pair<TRelation>(World world, Entity target)
+		=> Pair(world, world.LookupByTypeOrThrow<TRelation>(), target);
 	public static IdRef Pair<TRelation>(EntityRef target)
 		=> Pair(target.World.LookupByTypeOrThrow<TRelation>(), target);
+	public static IdRef Pair<TRelation, TTarget>(World world)
+		=> Pair(world, world.LookupByTypeOrThrow<TRelation>(),
+		               world.LookupByTypeOrThrow<TTarget>());
 
 	public EntityRef? AsEntity()
 		=> (Flags == default) ? World.LookupAlive(new Entity(new() { Data = Id })) : null;