Case study:

Coffee Machine Operation: The coffee machine is in the idle state when starting ON the machine. The machine moves to brewing state when the user presses the "Start" button. The coffee machine starts heating up the water and be in heating up state. Once the water reaches the optimal temperature, the coffee machine transitions to the ready state. The user selects their desired coffee type $($e$.$g$.,$ espresso, latte$)$ using the menu buttons. The coffee machine starts preparing the selected coffee type, which may involve grinding coffee beans, dispensing milk, etc. The coffee machine dispenses the prepared coffee into the user's cup in dispensing state. After dispensing the coffee, the coffee machine transitions back to the idle state. If the user wishes to close the machine presses "Off" button to end the state.

Based on the case study, develop State Machine diagram for the Coffee Machine Operation. If some information needs to be completed, make your own assumptions, and reflect them in the diagram.