Different code between github and pod

[ghost]

Hi, why pod 'Charts' Code is different than github ?
Exemple with IPieChartDataSet interface :

Pod :

@objc
public protocol IPieChartDataSet: IChartDataSet
{
// MARK: - Styling functions and accessors

/// the space in pixels between the pie-slices
/// **default**: 0
/// **maximum**: 20
var sliceSpace: CGFloat { get set }

/// indicates the selection distance of a pie slice
var selectionShift: CGFloat { get set }

}

and GitHub :

@objc
public protocol IPieChartDataSet: IChartDataSet
{
// MARK: - Styling functions and accessors

/// the space in pixels between the pie-slices
/// **default**: 0
/// **maximum**: 20
var sliceSpace: CGFloat { get set }

/// indicates the selection distance of a pie slice
var selectionShift: CGFloat { get set }

var xValuePosition: PieChartDataSet.ValuePosition { get set }
var yValuePosition: PieChartDataSet.ValuePosition { get set }

/// When valuePosition is OutsideSlice, indicates line color
var valueLineColor: NSUIColor? { get set }

/// When valuePosition is OutsideSlice, indicates line width
var valueLineWidth: CGFloat { get set } 

....

Please help, i need to use xValuePosition but not present in pod.

Thanks