@abc.abstractmethod<EOL><INDENT>def set_value_version_scheme(self, version_type):<DEDENT>
pass<EOL>
Sets a version type.

        :param version_type: the new version type
        :type version_type: ``osid.type.Type``
        :raise: ``InvalidArgument`` -- ``version_type`` is invalid
        :raise: ``NoAccess`` -- ``Metadata.isReadOnly()`` is ``true``
        :raise: ``NullArgument`` -- ``version_type`` is ``null``

        *compliance: mandatory -- This method must be implemented.*