     return elementsToReturn
   }
 }
+
+extension ProcessInfo
+{
+  open func isRunningOnYosemite() -> Bool
+  {
+    let operatingSystemVersion = self.operatingSystemVersion
+
+    return (operatingSystemVersion.majorVersion == 10) && (operatingSystemVersion.minorVersion == 10)
+  }
+}

    }
  }

  // MARK: - Private Methods | Animations

  fileprivate static func animationForMovingCellApart(_ currentFrame: NSRect, targetFrame: NSRect) -> CABasicAnimation


    // * * *.

    applyFrames()
  }

  // MARK: - Public Methods
