code: public String toQualified(String typeReference) {
  		if (unqualifiedToQualifiedMap == null) {
  			if (typeReference.equals(unqualified) || typeReference.equals(qualified)) return qualified;
  			for (Map.Entry<String, String> e : LombokInternalAliasing.ALIASES.entrySet()) {
  				if (e.getKey().equals(typeReference)) return e.getValue();
  			}
  			return null;
  		}
  		return unqualifiedToQualifiedMap.get(typeReference);
  	}
docs: Translates an unqualified name such as 'String' to 'java.lang.String', _if_ you added 'java.lang.String' to the library via the {@code addType} method.
  Also returns the input if it is equal to a fully qualified name added to this type library.
  
  Returns null if it does not match any type in this type library.