bundles/org.eclipse.packagedrone.repo.osgi.web/src/org/eclipse/packagedrone/repo/osgi/web/OsgiSitemapGenerator.java
private Optional<Instant> calcLastMod ()
    {
        Instant globalLastMod = null;

        for ( final ChannelInformation ci : this.channelService.list () )
        {
            final Optional<Instant> lastMod = ofNullable ( ci.getState ().getModificationTimestamp () );

            if ( globalLastMod == null || lastMod.get ().isAfter ( globalLastMod ) )
            {
                globalLastMod = lastMod.get ();
            }
        }
        return Optional.ofNullable ( globalLastMod );
    }
private Optional<Instant> calcLastMod ()
    {
        Instant globalLastMod = null;

        for ( final ChannelInformation ci : this.channelService.list () )
        {
            final Optional<Instant> lastMod = ofNullable ( ci.getState ().getModificationTimestamp () );

            if ( globalLastMod == null || lastMod.get ().isAfter ( globalLastMod ) )
            {
                globalLastMod = lastMod.get ();
            }
        }
        return Optional.ofNullable ( globalLastMod );
    }
Find the last modification timestamp of all channels

@return the latest modification timestamp of all channels