SNode.assertRead rewritten
fix exception on startup
fix read access check
StaticReference: better code
separating model from model descriptor where needed (SModel does not implement ISModel and SModelInternal any more)
fixing SModel usages in vcs
better code in FakeSModelDescriptor
SModelInternal: remove illegal redundant casts
model/descriptor conversion issues
fix StackOverflows at startup
fix exception on model open: illegal redundant cast
fix compilation in MPS
SModel: can't perform some operations shownig FakeModelDescriptor to somewhere
fix exception on model open: illegal redundant cast
model/descriptor conversion issues
fix exception on shutdown
fix exception on editing
fix exception on find usages
sync models with code
sync models with code