Ref
A class that can be used to inject a reference to an instance.
Public Methods
| Set | Sets the reference to the given instance. |
| Unset | Sets the reference to the type’s default. Usually this is null.. |
| Get | Returns the instance that has been set. |
| IsSet | Returns true if the instance is not null. |
| Is | Returns true if the reference is set to the given instance. |