https://download.eclipse.org/modeling/mdt/ocl/javadoc/5.0.0/org/eclipse/ocl/examples/library/collection/CollectionExcludingOperation.html
CollectionExcludingOperation (MDT-OCL Documentation)
mdtocldocumentation
https://download.eclipse.org/modeling/mdt/ocl/javadoc/4.0.0/org/eclipse/ocl/examples/library/collection/CollectionExcludingOperation.html
CollectionExcludingOperation (MDT-OCL Documentation)
mdtocldocumentation