GetSize = function (rect, out)
{
    if (out === undefined) { out = new Point(); }

    out.x = rect.width;
    out.y = rect.height;

    return out;
}
Returns the size of the Rectangle, expressed as a Point object.
With the value of the `width` as the `x` property and the `height` as the `y` property.

@function Phaser.Geom.Rectangle.GetSize
@since 3.0.0

@generic {Phaser.Geom.Point} O - [out,$return]

@param {Phaser.Geom.Rectangle} rect - The Rectangle to get the size from.
@param {(Phaser.Geom.Point|object)} [out] - The Point object to store the size in. If not given, a new Point instance is created.

@return {(Phaser.Geom.Point|object)} A Point object where `x` holds the width and `y` holds the height of the Rectangle.