UnityEditor.TreeViewTest.BackendData.GetParentsBelow C# (CSharp) Method

            public HashSet<int> GetParentsBelow(int id)
            {
                Foo searchFromThis = FindNodeRecursive(this.root, id);
                if (searchFromThis == null)
                {
                    return new HashSet<int>();
                }
                if (this.m_RecursiveFindParentsBelow)
                {
                    return this.GetParentsBelowRecursive(searchFromThis);
                }
                return this.GetParentsBelowStackBased(searchFromThis);
            }