class SomeStrategyWithLongNameClass implements ... {

    private final SomeStrategyWithLongNameClass self = this;

    private SomeService someService;

    public Function<...> someMethod() {
         return new Function<>() {
             @Override
             public Result apply(Argument x) {
                 ....
                 SomeVar var = self.someService.execute(...);
                 ....
                 return result;
             }
         }
    }
}