- The message <parameter>m</parameter> passed to the callback is only borrowed, that is, the callback should not
- call <citerefentry><refentrytitle>sd_bus_message_unref</refentrytitle><manvolnum>3</manvolnum></citerefentry> on
- it. If the callback wants to hold on to the message beyond the lifetime of the callback, it needs to call
- <citerefentry><refentrytitle>sd_bus_message_ref</refentrytitle><manvolnum>3</manvolnum></citerefentry> to create
- a new reference.
- </para>
-
- <para>
- If an error occurs during the callback invocation, the callback should return a negative error number. If it
- wants other callbacks that match the same rule to be called, it should return 0. Otherwise it should return a
+ If an error occurs during the callback invocation, the callback should
+ return a negative error number. If it wants other callbacks that match the
+ same rule to be called, it should return 0. Otherwise it should return a