def set_created_date(self, created_date=None):
pass<EOL>
Sets the created date.

        arg:    created_date (osid.calendaring.DateTime): the new
                created date
        raise:  InvalidArgument - ``created_date`` is invalid
        raise:  NoAccess - ``Metadata.isReadOnly()`` is ``true``
        raise:  NullArgument - ``created_date`` is ``null``
        *compliance: mandatory -- This method must be implemented.*