@utilities.arguments_not_none<EOL><INDENT>def get_item_record(self, item_record_type):<DEDENT>
return self._get_record(item_record_type)<EOL>
Gets the item record corresponding to the given ``Item`` record ``Type``.

        This method is used to retrieve an object implementing the
        requested records. The ``item_record_type`` may be the ``Type``
        returned in ``get_record_types()`` or any of its parents in a
        ``Type`` hierarchy where ``has_record_type(item_record_type)``
        is ``true`` .

        arg:    item_record_type (osid.type.Type): the type of the
                record to retrieve
        return: (osid.assessment.records.ItemRecord) - the item record
        raise:  NullArgument - ``item_record_type`` is ``null``
        raise:  OperationFailed - unable to complete request
        raise:  Unsupported - ``has_record_type(item_record_type)`` is
                ``false``
        *compliance: mandatory -- This method must be implemented.*