Note that if an anonymous class is converted into a stateless lambda, the same lambda object
can be reused by Java runtime during subsequent invocations. On the other hand, when an anonymous class is used,
separate objects are created every time. Thus, applying the quick-fix can cause the semantics change in rare cases,
e.g. when anonymous class instances are used as HashMap
keys.
Lambda syntax is not supported under Java 1.7 or earlier JVMs.