Originals and masters

IDocObject is the base for all doc object functionality. It provides members for traversing the parent-child hierarchy (Children, GetChildren<T>,GetDescendants<T>,Parent,GetAncestor<T>,Root), which we have already met, and it also provides members for traversing the occurrence structure:

• Original: Gets the original IDocObject, else null if this is a master.
• Master: Gets the ultimate original, that is the DocObject master at the end of the occurrence chain. If the object is a master, the object itself is returned.
• Instance: Gets the instance that produces this occurrence, else null if this is a master.