using System;
public sealed class Dimensions : ICloneable
{
public Dimensions( long width, long height ) {
this.width = width;
this.height = height;
}
private Dimensions( Dimensions other ) {
this.width = other.width;
this.height = other.height;
}
public object Clone() {
return new Dimensions(this);
}
private long width;
private long height;
}