type, data-set and value-list is passed to all write-callbacks that are
registered with the daemon.
-B<Note>: Prior to version 4.4 of collectd, the data-set type used to be passed
-as the first argument to B<plugin_register>. This syntax is still supported
-for backwards compatibility but has been deprecated and will be removed in
-some future version of collectd.
-
=item B<plugin_write> ([B<plugins> => I<...>][, B<datasets> => I<...>],
B<valuelists> => I<...>)