+TRUE on success, FALSE on failure.
+
+=head3 Function
+
+Allows you to override utility functions that are called internally to
+provide a different default function.
+
+It's superficially similar to _addmethods, which is called by load,
+but it deals with code references, and requires the method name to be
+known.
+
+Methods overridden here are _NOT_ overrideable in _addmethods. This
+may need to be changed.