ITERATOR_INDEX_INVALID
if (iter.individual_element_index == ITERATOR_INDEX_INVALID
iter->type_element_index = ITERATOR_INDEX_INVALID;
iter->global_element_index = ITERATOR_INDEX_INVALID;
iter->individual_element_index = ITERATOR_INDEX_INVALID;
iter->saved_individual_element_index = ITERATOR_INDEX_INVALID;
iter->individual_element_index = ITERATOR_INDEX_INVALID;