BS-2299,
Context:
False Validation constraint error on pool names
Why:
A same pool load in a different resourceSet, which is the case when the
diagram is closed, is not equal to himself using equals method. Thus the
name constraint was detecting a duplicate.
Fix:
 Use EcoreUtil to compare two processes instead of using equals. Instead
of comparing if it's the same instance it's comparing the content of the
object feature by feature.