Gets the UNIX file descriptors associated with @message, if any.
This method is only available on UNIX.
The file descriptors normally correspond to %G_VARIANT_TYPE_HANDLE
values in the body of the message. For example,
if g_variant_get_handle() returns 5, that is intended to be a reference
to the file descriptor that can be accessed by
g_unix_fd_list_get (list, 5, ...).
Gets the UNIX file descriptors associated with @message, if any.
This method is only available on UNIX.
The file descriptors normally correspond to %G_VARIANT_TYPE_HANDLE values in the body of the message. For example, if g_variant_get_handle() returns 5, that is intended to be a reference to the file descriptor that can be accessed by g_unix_fd_list_get (list, 5, ...).