Relation.destroy
void destroy() nothrowDestroys the #GRelation, freeing all memory allocated. However, it does not free memory allocated for the tuple data, so you should free that first if appropriate.
Deprecated
Rarely used API
void destroy() nothrowDestroys the #GRelation, freeing all memory allocated. However, it does not free memory allocated for the tuple data, so you should free that first if appropriate.