Defines an Alert component. 
The Alerts are a great way to offer the user the ability to choose a specific action or list of actions. They also can provide the user with important information, or require them to make a decision.
The return value can be accessed by the navigation stack, using  parent.out  for example.
 For more information : Alert.
| Name | Description | 
|---|---|
| Css class 1 | A css class for button 1. | 
| Css class 2 | A css class for button 2. | 
| Css class 3 | A css class for button 3. | 
| CssClass | Additional classes for custom styles, separated by spaces. | 
| Enable Backdrop Dismiss | Whether the alert should be dismissed by tapping the backdrop. Default true. | 
| Message | The message for the alert. | 
| Return value 1 | A value to return for the button 1. | 
| Return value 2 | A value to return for the button 2. | 
| Return value 3 | A value to return for the button 3. | 
| Role 1 | The button 1 role: not set or cancel. | 
| Role 2 | The button 2 role: not set or cancel. | 
| Role 3 | The button 3 role: not set or cancel. | 
| SubTitle | The subtitle for the alert. | 
| Text 1 | Text for the button 1. | 
| Text 2 | Text for the button 2. | 
| Text 3 | Text for the button 3. | 
| Title | The title for the alert. | 
| Comment | Describes the object comment to include in the documentation report. This property generally contains an explanation about the object. | 
| Is active | Defines whether the component is active. | 
 Alert