Avoiding Obsolete Default Constructor with Android Custom Renderers in 2.5

Can anyone explain how to avoid the obsolete default constructor for android custom renderers in xamarin forms 2.5?

An example of a custom renderer from 2.4

[assembly: ExportRenderer(typeof(AutoCompleteEntry), typeof(AutoCompleteEntryRenderer))]
namespace MyApp.Droid
{
    public class AutoCompleteEntryRenderer : ViewRenderer<AutoCompleteEntry, AutoCompleteTextView>
    {
        protected override void OnElementChanged(ElementChangedEventArgs<AutoCompleteEntry> e) {
            base.OnElementChanged(e);

            if (e.OldElement == null && this.Element != null) {
                // Perform initialization
            }
        }
    }
}

However adding a new constructor that takes a Context does not work with the ExportRenderer attribute, it will throw an exception on run.

public AutoCompleteEntryRenderer(Context context)
    : base(context) {
}

Referencing Forms.Context is also obsolete so I'm just not sure how to get a context reference in 2.5