Re: org.freedesktop.NetworkManager.Settings.PropertiesChanged deprecated

[mh mike franken de]

On Donnerstag, 15. Juli 2021 06:45:06 CEST Andrei Borzenkov via 
networkmanager-list wrote:
[...]
> > #!/usr/bin/perl -w
> >
> > use strict;
> >
> > use Data::Dumper;
> > $Data::Dumper::Sortkeys = 1;
> > $Data::Dumper::Indent = 1;
> > use Net::DBus;
> > use Net::DBus::Dumper;
> > use Net::DBus::Reactor;
> >
> > my $oBUS = Net::DBus->system || die $!;
> > my $nm = "org.freedesktop.NetworkManager";
> > my $oNM = $oBUS->get_service( $nm ) || die $!;
> > my $nmobjpath = "/org/freedesktop/NetworkManager";
> > my $nmif = "org.freedesktop.NetworkManager";
> > my $oNMIF = $oNM->get_object( $nmobjpath, $nmif ) || die $!;
> >
> > $nmobjpath = "/org/freedesktop/NetworkManager/Settings";
> > $nmif = "org.freedesktop.NetworkManager.Settings";
> > my $oNMIFS = $oNM->get_object( $nmobjpath, $nmif ) || die $!;
> >
> > $oNMIF->connect_to_signal(
> >
> >   "PropertiesChanged", sub {
> >   
> >     &{ \&dbnm_onNMPropertiesChanged }( $oNM, $oNMIF, $oNMIFS, @_ );
> >   
> >   }
> >
> > );
> > my $reactor = Net::DBus::Reactor->main() || die $!;
> > $reactor->run() || die $!;
> >
> > sub dbnm_onNMPropertiesChanged {
> >
> >   my( $oNM, $oNMIF, $oNMIFS, $props ) = @_;
> >   print "\n- props -\n", Dumper( $props ), "\n--\n";
> >
> > }
>
> NM PropertiesChanged and D-Bus
> org.freedesktop.DBus.Properties.PropertiesChanged have different
> signatures. You are dumping interface name, not properties dictionary.

I am not sure, I understand this:
The example above is the one for NetworkManager's PropertiesChanged signal.
It worked perfectly as long as this signal existed.

Besides that, what does "signature" mean in this context? Different 
parameters?

Bye.
Michael.