How to write bytebuddy code for private HashMap> hm;?

Question

If I write bytebuddy code

.defineProperty("hm",TypeDescription.Generic.Builder.parameterizedType(HashMap.class, String.class, HashSet.class).build())

like this ,Then result is private HashMap<String, HashSet> hm;

but my requirement is private HashMap<String, HashSet<String>> hm;

Answer 1

The builder accepts Byte Buddy's TypeDefinitions just as much as type literals so you can simply nest the built types:

TypeDescription.Generic type = TypeDescription.Generic.Builder.parameterizedType(
  TypeDescription.ForLoadedType.of(HashMap.class),
  TypeDescription.Generic.Sort.describe(String.class),
  TypeDescription.Generic.Builder.parameterizedType(HashSet.class, String.class).build()
).build();