For a category plotted series, returns the current width of the items within the categories. This only returns a value if the items have some form of width (e.g. columns, bars, etc.) otherwise 0 is returned.
Return Value
The width of the items for this series within the categories.
Target Platforms: Android 4.4+, iOS 8+
Development Environments: Visual Studio 2015+, Visual Studio for Mac Preview, Xamarin for Visual Studio 4.2+
