Adapter to ease the migration from FakeItEasy 1.x to 2.0.0, to avoid modifying existing fake configurators.

FakeConfigurator.cs

using FakeItEasy;
using FakeItEasy.Creation;

namespace TestUtilies
{
    public abstract class FakeConfigurator<T> : FakeOptionsBuilder<T>
    {
        protected override void BuildOptions(IFakeOptions<T> options)
        {
            options.ConfigureFake(ConfigureFake);
        }

        public abstract void ConfigureFake(T fakeObject);
    }
}