As per SO question: [inject-custom-service-for-angular-material-fileupload-module-not-found-error](https://stackoverflow.com/questions/68437157/inject-custom-service-for-angular-material-fileupload-module-not-found-error) Enhancement: Allow file type and/or file size restriction on files added using dragdrop and 'choose file', by Injection in a custom ```MatFileUploadQueueService```.