gistfile1.cs

// special interface for overriding automaps
public interface IMappingOverride<T>
{
  void Override(AutoMap<T> mapping);
}

// special config chunk for using above
public class SupplyMappingOverridesChunk : IAutoMappingConfigChunk
{
  private readonly Assembly assembly;

  public SupplyMappingOverridesChunk(Assembly overridesAssembly)
  {
    assembly = overridesAssembly;
  }

  public void Configure(AutoPersistenceModel model)
  {
    foreach (var type in assembly.GetTypes())
    {
      if (!type.IsSubclassOf(typeof(IMappingOverride<>))) continue;

      // create auto map for type, and execute the
      // IMappingOverride<T>.Override method against it

      model.AddMapping(mapping);
    }
  }
}

// which is used through this on the AutoPersistenceModel
public AutoPersistenceModel WithMappingOverridesFromAssemblyOf<T>()
{
  return WithConfigurationChunk(new SupplyMappingOverridesChunk(typeof(T).Assembly));
}