created a per-object attribute, fetch_matrix() which can be
set immediately before accessing any fkey method. This will
cause undefined() to use get_matrix() for that fetch,
assuming of course that the method hasn't been invoked already.
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created a per-object attribute, fetch_matrix() which can be
set immediately before accessing any fkey method. This will
cause undefined() to use get_matrix() for that fetch,
assuming of course that the method hasn't been invoked already.