[ Version ( since = "2.28" ) ]
public abstract void activate (Variant? parameter)
Activates the action.
parameter must be the correct type of parameter for the action (ie: the parameter type given at construction time). If the
parameter type was null then parameter must also be null.
If the parameter GVariant is floating, it is consumed.
| this |
a Action |
| parameter |
the parameter to the activation |