UnityEditor.MemoryElement.FirstChild C# (CSharp) Method

        public MemoryElement FirstChild()
        {
            return this.children[0];
        }

 public void MoveUp()
 {
     if ((this.m_Selected != null) && (this.m_Selected.parent != null))
     {
         MemoryElement prevNode = this.m_Selected.GetPrevNode();
         if (prevNode.parent != null)
         {
             this.SetSelection(prevNode);
         }
         else
         {
             this.SetSelection(prevNode.FirstChild());
         }
     }
 }