| Add | Add an element to this element's contentContainer | 
| Children | Returns the elements from its contentContainer | 
| Clear | Remove all child elements from this element's contentContainer | 
| ElementAt | Retrieves the child element at position | 
| IndexOf | Retrieves the index of the specified VisualElement in the Hierarchy. | 
| Insert | Insert an element into this element's contentContainer | 
| Remove | Removes this child from the hierarchy | 
| RemoveAt | Remove the child element located at this position from this element's contentContainer | 
| Sort | Reorders child elements from this VisualElement contentContainer. |