Update Cryville.Crtr.Extension.

Assets/Cryville/Crtr/Extensions/Umg/SkinResourceImporter.cs

@@ -1,6 +1,5 @@
-using Cryville.Crtr.Extension;
+using Cryville.Crtr.Extension;
 using Newtonsoft.Json;
-using System.Collections.Generic;
 using System.IO;
 using System.Text;
 
@@ -11,10 +10,10 @@ namespace Cryville.Crtr.Extensions.Umg {
 			return SUPPORTED_FORMATS;
 		}
 
-		public override IEnumerable<Resource> ConvertFrom(FileInfo file) {
+		public override void Convert(FileInfo file, ConversionSession ses) {
 			using (StreamReader reader = new StreamReader(file.FullName, Encoding.UTF8)) {
 				var data = JsonConvert.DeserializeObject<Skin>(reader.ReadToEnd());
-				return new Resource[] { new SkinResource(data.name, file) };
+				ses.AddResource(new SkinResource(data.name, file));
 			}
 		}
 	}