An automated teller machine $($ATM$)$ allows bank customers to access their account and complete basic financial transactions without going inside the actual bank branch. Your task is to create a UML state diagram that models the key states, events, and activities that take place in a typical ATM system. In your diagram, be sure to include:

$$ The primary high$-$level states of the ATM such as powered off, idle, user authentication, transaction, and out of

service.

$$ Common events like insert card, enter PIN, select transaction, eject card, etc.

$$ The activities and actions that result from certain events occurring in particular states such as authenticating user, dispensing cash, printing receipt, updating account balances, etc.

$$ Decision points that control the ability to transition between certain states.

$$ An initial state when the ATM is powered on and reverts to between customers.

$$ Proper final and exit states when complete or out of service.

The completed UML state diagram should provide a comprehensive overview of the functional states, events, transitions, activities and behaviors that govern a typical ATM machine during customer sessions. Format your diagram clearly and

organize states in a logical flow while applying UML notation accurately.

Include a short written description documenting your design decisions and assumptions. This will demonstrate your understanding of utilizing UML state diagrams to model a real$-$world system such as a ubiquitous ATM.