What build action should be set for Android content?

I was playing with MonoGame Android, and just realized that the Content build action doesn’t work: “Warning XA0101: @(Content) build action is not supported (XA0101)”

And it seems Xamarin hasn’t figure out a way to solve this:
The normal Content Build action is not supported (as we haven’t figured out how to support it without a possibly costly first-run step).

Starting in Xamarin.Android 5.1, attempting to use thw @(Content) Build action will result in a XA0101 warning."

I wonder if there is a way around this issue?