interface-example.cs

namespace Example.Storage
{
    public class Example
    {
        protected readonly IFileUploadService UploadService;
      
        public Example(IFileUploadService uploadService)
        {
          this.UploadService = uploadService;
        }
      
        public void SaveFile(Stream file)
        {
          await this.UploadService.UploadAsync(file, "example/directory");
        }
    }
}