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Rob Knapen, Alterra, Wageningen UR (Rob.Knapen@wur.nl)
Standa Vanecek, DHI (s.vanecek@dhi.cz)
Adrian Harper, Wallingford Software (adrian.harper@wallingfordsoftware.com)
Stef Hummel, Deltares (stef.hummel@deltares.nl)
~don, Deltares (gennadii.donchyts@deltares.nl)
Jesper Grooss, DHI (jgr@dhigroup.com)
Peter Schade, Bundesanstalt fuer Wasserbau (peter.schade(at)baw.de)

1. Progress towards OpenMI 2 Beta release

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(Jesper) I have added a third alternative, which is somewhat in between. The more I look at it, the more I prefer alternative 2.

(Peter) The second alternative has the advantage that a developer sees clearer what is implemented in e.g. MyParallelTimeSpaceComponent. Alternative 1 and 3 mean that he has to know or to look up that IBaseLinkableComponent is included. (Shouldn't it be IBaseLinkableComponent in the first line of alt. 2?)
On the other hand, if an extension has a problem with a method of ILinkableComponent which is not part of the extension, will it be allowed to overwrite it? In this case the second alternative would mean two different versions of the method, the original one and the overwritten one.

Alternative 1 (interface hierarchy):

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