abp/framework/test/Volo.Abp.Features.Tests/Volo/Abp/Features/MethodFeatureTestService.cs

using System.Threading.Tasks;
using Volo.Abp.DependencyInjection;

namespace Volo.Abp.Features;

public class MethodFeatureTestService : ITransientDependency, IMethodFeatureTestService
{
    /* Since this class is used over an interface (IMethodFeatureTestService),
     * no need to virtual keywords, dynamic proxy can work.
     */

    [RequiresFeature("BooleanTestFeature1")]
    public Task<int> Feature1Async()
    {
        return Task.FromResult(42);
    }

    public Task NonFeatureAsync()
    {
        return Task.CompletedTask;
    }
}