B (@MyAnnotation @NonNull final String barKey, @MyAnnotation @NonNull final Integer barValue) { if (barKey == null) { throw new java.lang.NullPointerException("barKey is marked non-null but is null"); } if (barValue == null) { throw new java.lang.NullPointerException("barValue is marked non-null but is null"); } if (this.bars$key == null) { this.bars$key = new java.util.ArrayList<@MyAnnotation @NonNull String>(); this.bars$value = new java.util.ArrayList<@MyAnnotation @NonNull Integer>(); } this.bars$key.add(barKey); this.bars$value.add(barValue); return self(); }