     var serialized: SerializedAssetAttribute {
         get {
             var s = [SerializedAssetAttributeKeys.Filename: filename, SerializedAssetAttributeKeys.Scale: scale, SerializedAssetAttributeKeys.Idiom: idiom]
-            if let size = size { s.updateValue(size, forKey: SerializedAssetAttributeKeys.Size) }
-            if let extent = extent { s.updateValue(extent, forKey: SerializedAssetAttributeKeys.Extent) }
-            if let subtype = subtype { s.updateValue(subtype, forKey: SerializedAssetAttributeKeys.Subtype) }
-            if let orientation = orientation { s.updateValue(orientation, forKey: SerializedAssetAttributeKeys.Orientation) }
-            if let minimumSystemVersion = minimumSystemVersion { s.updateValue(minimumSystemVersion, forKey: SerializedAssetAttributeKeys.MinimumSystemVersion) }
+            if let size = size {
+                s.updateValue(size, forKey: SerializedAssetAttributeKeys.Size)
+            }
+            if let extent = extent {
+                s.updateValue(extent, forKey: SerializedAssetAttributeKeys.Extent)
+            }
+            if let subtype = subtype {
+                s.updateValue(subtype, forKey: SerializedAssetAttributeKeys.Subtype)
+            }
+            if let orientation = orientation {
+                s.updateValue(orientation, forKey: SerializedAssetAttributeKeys.Orientation)
+            }
+            if let minimumSystemVersion = minimumSystemVersion {
+                s.updateValue(minimumSystemVersion, forKey: SerializedAssetAttributeKeys.MinimumSystemVersion)
+            }
             return s
         }
     }
 }
 
-// TODO:
-private enum DeviceType {
-    case iPhone
-    case iPad
-    case Universal
-    case Mac
-    case Watch
-}
 
 enum AssetType {
     case Image

    static func withAsset(path: Path) -> AssetAttribute {
        let name = path.lastPathComponent
        
        let is2x = name.rangeOfString(GenerationKeywords.PPI1x) != nil
        let is3x = name.rangeOfString(GenerationKeywords.PPI3x) != nil
        let scale = is2x ? "2x" : is3x ? "3x" : "1x"
        


}

// TODO:
private enum DeviceType {
    case iPhone
    case iPad
    case Universal
    case Mac
    case Watch
}

