Tests to write:
================
emfServices
	 check return types of EMF services (eClassifiers returns OrderedSet in A3 and Sequence in A4)

Differences when evaluated in A4:
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Unsupported in A4:
==================
acceleoServices
	 TODO implement getProperties
numericServices
	 WIP https://git.eclipse.org/r/#/c/163019/ operations between Real And Integers
