This property is overridden in OfficeImage descendants to point to a single instance of an image that can be incorporated in different objects.
An OfficeImage object that is the image in the document.
Multiple instances of OfficeImage descendants utilized in different tasks and processes of the RichEditControl may use a single instance of a document image. The RootImage property provides access to this instance when required, reducing memory consumption and enhancing performance.
For the base OfficeImage class, the RootImage property returns the same OfficeImage instance.