Specifies whether the element may not have a direct instance. True
indicates that an instance of the element must be an instance of a
child of the element. False indicates that there may an instance of
the element that is not an instance of a child.
Parameters: pVal - [out] true if abstract, false otherwise.
Retrieves the name of the package that contains the class. If the
class does not belong to a package the name will be an empty string.
Parameters: pVal - [out] The package that owns the class.