Commands.cs

public class CreateFolder
{
  public string Name { get; set; }
}

public class DeleteFolder
{
  public Guid Id { get; set; }
}

FolderCommandHandlers.cs

public class FolderCommandHandlers : IHandle<CreateFolder, Guid>, IHandle<DeleteFolder>
{
  public Task<Guid> Handle(CreateFolder command)
  {
     // do stuff
     return Guid.NewGuid();
  }
  
  public Task Handle(DeleteFolder command)
  {
    // Do stuff
  }
}

FoldersController.cs

public class FoldersController
{
  private readonly IHandle<CreateFolder, Guid> _createFolder;
  private readonly IHandle<DeleteFolder> _deleteFolder;
  
  public FoldersController(IHandle<CreateFolder, Guid> createFolder, IHandle<DeleteFolder> deleteFolder)
  {
    _createFolder = createFolder;
    _deleteFolder = deleteFolder;
  }
}

IHandle.cs

public interface IHandle<TCommand>
{
  Task Handle(TCommand command);
}

public interface IHandle<TCommand, TResponse>
{
  Task<TResponse> Handle(TCommand command);
}