How does this assignment diagram and pseudocode look? Feedback and suggestions please, Thanks.

Forum Unit 07 Discussion Here is the problem In the Exercises in Chapter 7, you designed a class named Book that holds a stock number, author, title price, and number of pages for a book. Design a class named TextBook that is a child class of Book Include a new data field for the grade level of the book and get and set methods for the new field. Provide the pseudocode for the TextBook class 8 Class Diagram: AbstractClass Book -stockNumber num author: string title:string price: num pages:num +setstockNumbers num): void +setAuthor(a string): void setTitet: string): void +setPrice(ps: num): void +setPages p num): void +getstockNumber):num getAuthor():string +getTitle): string getPrice0: num getPages(): num TextBook evel: num setGradeLevel(gradelevel: num) void displaylnfo): void