sd_bus_message_read_strv — Access an array of strings in a message
sd_bus_message_read_strv() gives access to an array of string-like items in
m. The "read pointer" in the message must be right before an array of
strings (D-Bus type "
as"), object paths (D-Bus type "
signatures (D-Bus type "
ag"). On success, a pointer to a
NULL-terminated array of strings is returned in the output parameter
l. Note that ownership of this array is transferred to the caller. Hence, the
caller is responsible for freeing this array and its contents.
sd_bus_message_read_strv() returns a non-negative integer. On
failure, it returns a negative errno-style error code.