export type Material = {
    id: number;
    course_class_id: number;
    course_class: {
        id: number;
        course: { id: number; code: string; name: string } | null;
    } | null;
    title: string;
    description: string | null;
    meeting_number: number | null;
    file_url: string | null;
    file_name: string | null;
    created_at: string;
    updated_at: string;
};
