public void method_1(DocumentObjectCollection.ChangeItems A_0)
            {
                int num = 11;

                if (!this.list_0.Contains(A_0))
                {
                    throw new ArgumentException(BookmarkStart.b("夰刲嬴匶唸帺似Ἶ⽀ⱂㅄ杆ⱈ㍊⑌㱎═⁒", num));
                }
                this.list_0.Remove(A_0);
            }
            public void method_0(DocumentObjectCollection.ChangeItems A_0)
            {
                int num = 13;

                if (this.list_0.Contains(A_0))
                {
                    throw new ArgumentException(BookmarkStart.b("嬲吴夶崸场堼䴾慀≂⥄㕆ⱈ⩊⥌㙎煐㙒ⵔ㹖⩘⽚⹜", num));
                }
                this.list_0.Add(A_0);
            }