private void CreateEventIcon()
{
eventIcon = IconFactory.CreateEvent(Characteristic, Background, Outline);
eventIcon = IconFactory.CreatePlacedIcon(eventIcon, BpmnConstants.EventPlacement, MinimumSize);
bool isFilled = Characteristic == EventCharacteristic.Throwing || Characteristic == EventCharacteristic.End;
if (isFilled != fillTypeIcon)
{
fillTypeIcon = isFilled;
CreateTypeIcon();
}
}