From 2e35148abe0245427ce579b2afbb36d1496979ed Mon Sep 17 00:00:00 2001
From: Roel Spilker
Lombok can add nullity annotations (usually called @NonNull and @Nullable) whenever it makes sense to do so; think of generated toString and withX methods (these never return null), or the parameter of a generated equals method, which is allowed to be null, and requires such an annotation if you've set up your IDE for strict null checks as well as 'parameters are non-null by default'. There are many such libraries; you must tell lombok which one to use. By default, no such annotations are added. Enable this feature with:
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lombok.addNullAnnotations = <flavor>javax (=JSR305; not recommended), eclipse, jetbrains, netbeans, androidx, android.support (deprecated within android), checkerframework (recommended), findbugs, spring, jml, or define your own via CUSTOM:fully.qualified.NonNullAnnotation:fully.qualified.NullableAnnotation; if your nullity annotation is solely of the type use style (it annotates types, such as eclipse's and checkerframework's offerings, versus annotating methods and parameters), the format is CUSTOM:TYPE_USE:nonnullanno:nullableanno.