get_easing_duration
Description:
[ Version ( deprecated = true ,  deprecated_since = "1.12" ,  since = "1.2" ) ]
public uint get_easing_duration ()
  public uint get_easing_duration ()
Warning: get_easing_duration is deprecated since 1.12.
Retrieves the duration set using set_easing_duration
Parameters:
| this | 
Returns:
| 
           the duration of the animations, in milliseconds  |