Clones a LinearElement. All the class that derive from LinearElement should implment this method and so return a copy of an instance of themselve. The CloneInternal methods should follow the pattern as below: return gcnew DerivedClass (GetUnmanagedClone()->getDerivedClassUnmangedInteface()); Note: this call generates 2 references to the unmanaged element and LinearElement takes care of releasing one of them

protectedabstract LinearElement CloneInternal()