def set_uploading(self, files_uploaded):
        """ set_uploading: records progress during uploading files
            Args: files_uploaded ([str]): list of files that have been successfully uploaded
            Returns: None
        """
        self.files_uploaded = files_uploaded
        self.__record_progress(Status.UPLOADING_FILES)
set_uploading: records progress during uploading files
            Args: files_uploaded ([str]): list of files that have been successfully uploaded
            Returns: None