public bool IsEmpty()
{
if (this.eventTreeItem_0 == null && this.eventTreeItem_1 == null)
{
return true;
}
if (this.eventTreeItem_1 == null)
{
return false;
}
if (this.eventTreeItem_1.queue.IsEmpty())
{
return true;
}
this.method_0(this.eventTreeItem_1);
this.eventTreeItem_1 = null;
return false;
}