The name of the type library that the typelib parameter points to.
The name returned by this method is the identifier used with the library statement, such as ADODB for the Microsoft ADO type library. The name is not a file name.
You can also retrieve the type library name by calling the UCOMITypeInfo.GetDocumentation(int, String@, String@, Int32@, String@) method and passing -1 for its first parameter.