c# interface with generics

interface-with-generics.cs

using MyService.Core.Models;

namespace MyService.Providers.Mappers
{
    public interface IMyMapper<in T> where T : ISomething
    {
        MappedSomething MapToSomething(T somethingGeneric);
    }
    
    public class MyConcreteMapper : IMyMapper<SomethingA>
    {
        public async MappedSomething MapToSomething(SomethingA somethingSpecific)
        {
        }
    }
    
    public class SomethingA : ISomething
    {
    }
}