Attests that a Collection contains at least all of the objects contained
in the provided collection or fails, coping with duplicates in both
the Collection and the parameters.
Deprecated.This method is not a proposition, but the default Object equality method.
Testing code should use "is" or "isEqualTo" propositions for equality tests.
Deprecated.Equals/Hashcode is not supported on Subjects. Their only use is as a holder of
propositions. Use of equals() is deprecated and forwards to isEqualTo() and
hashCode() is disallowed.