@abc.abstractmethod<EOL><INDENT>def create_value(self, value_form):<DEDENT>
return<EOL>
Creates a value.

        :param value_form: the form
        :type value_form: ``osid.configuration.ValueForm``
        :return: the value
        :rtype: ``osid.configuration.Value``
        :raise: ``IllegalState`` -- ``value_form`` already used in a create transaction
        :raise: ``InvalidArgument`` -- one or more of the form elements is invalid
        :raise: ``NullArgument`` -- ``value_form`` is ``null``
        :raise: ``OperationFailed`` -- unable to complete request
        :raise: ``PermissionDenied`` -- authorization failure
        :raise: ``Unsupported`` -- ``value_form`` did not originate from ``get_value_form_for_create()``

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