Abstract method that returns byte[] array translated with --objc-generics raises compile error

Hi,

we have Java file with method:

```java
abstract byte[] readData();
```

In .h is generated:

```objective-c
- (IOSArray *)readData;
```

It raises compile error: Declaration of JavaLangByte must be imported before required

It looks like that generator counts with usage of `IOSByteArray` (it is defined by `@class` declaration in .h file). That is also type, that is used in generated .m file.