public MaterialController(ILogger <MaterialController> logger, IMaterialService materialService, IVideoMaterialService videoMaterialService, IBookMaterialService bookMaterialService, IArticleMaterialService articleMaterialService, IMapper mapper)
 {
     this.logger                 = logger;
     this.mapper                 = mapper;
     this.materialService        = materialService;
     this.bookMaterialService    = bookMaterialService;
     this.videoMaterialService   = videoMaterialService;
     this.articleMaterialService = articleMaterialService;
 }
 public VideoMaterialController(IVideoMaterialService videoMaterialService, IMapper mapper)
 {
     this.videoMaterialService = videoMaterialService;
     this.mapper = mapper;
 }