XPlat.Foundation (nuget): This package includes Windows.Foundation like APIs cross-platform such as:       - Size for representing number values that specify a height and width.       - TypedEventHandler for representing a method that handles general events.
Keywords: XPlat|API|Foundation|Windows|UWP|iOS|Android|Xamarin|Size|TypedEventHandler|android|app-development|cross-platform|dotnet|ios|uwp|xamarin