             return layer.shadowColor.flatMap(UIColor.init)
         }
         set {
+            #if !TARGET_INTERFACE_BUILDER
             layer.shadowColor = newValue?.cgColor
+            #endif
         }
     }
 

            return layer.shadowOffset
        }
        set {
            layer.shadowOffset = newValue
        }
    }


            return layer.shadowOpacity
        }
        set {
            #if !TARGET_INTERFACE_BUILDER
            layer.shadowOpacity = newValue
            #endif
        }
    }

