This version of Unity is unsupported.
Method group is Obsolete

EventBase.isDefaultPrevented

Obsolete Use isPropagationStopped. Before proceeding, make sure you understand the latest changes to UIToolkit event propagation rules by visiting Unity's manual page https://docs.unity3d.com/Manual/UIE-Events-Dispatching.html. public bool isDefaultPrevented;

Description

Returns true if the default actions should not be executed for this event.