Based on the figure below, construct a complete class diagram.private double length$=1\mathrm{.}0$; public Rectangle $0\{$public Rectangle$($double width, double length$)\{$ this.width $=$ width;$\}$ this.width $=$ width; this.length $=$ length;public double getWidth$(0\{$ return width; $\}$getLength$()\{$ return length; $\backslash$public String toString$0\{$ return "Rectangle$\{"+",$ length$="+$ length $+\text{'}\}\text{'}$;public double getArea$()\{$ return width$*$length; $\}\}$Draw sequence diagrams to represent a scenario where a client searches for a book in a library. He or she then asks

to borrow the book. If a copy of this book is available, a loan object is created. $[10$ Marks$]$