@abc.abstractmethod<EOL><INDENT>def get_maximum_elements(self):<DEDENT>
return<EOL>
In the case where an array or list of elements is specified in an ``OsidForm,`` this specifies the maximum number of elements that can be specified.

        :return: the maximum elements or ``1`` if ``is_array()`` is ``false``
        :rtype: ``cardinal``


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