Clone = function (polygon)
{
    return new Polygon(polygon.points);
}
Create a new polygon which is a copy of the specified polygon

@function Phaser.Geom.Polygon.Clone
@since 3.0.0

@param {Phaser.Geom.Polygon} polygon - The polygon to create a clone of

@return {Phaser.Geom.Polygon} A new separate Polygon cloned from the specified polygon, based on the same points.