Mikhail Glukhikh 9ef89447b3 Sealed sub-class -> object: handle equals, suggest "add equals" ...

Before this commit, sealed sub-class without state was considered
a style issue.
After this commit, sealed sub-class without state AND custom equals
is considered a probable bug,
because comparison of its instances is very fragile.
Alternative fix (generate equals & hashCode by identity) is added.

2018-06-19 11:20:26 +03:00

..

after

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before

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convertCallableReferenceUsages.test

Sealed sub-class -> object: handle equals, suggest "add equals"

2018-06-19 11:20:26 +03:00