Hi all,


please have a look at the attached changeset. I did not like the fact that dozens of models implement their own #open methods, both on instance & class side, which introduces a lot of duplication. I moved these implementation into their common superclass (Model) and tried to eliminate all equal overridden versions.


Would be nice if someone could merge this into Trunk (after our next release, I guess), if you agree :-)


Best,

Christoph
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