Rename refactoring, PHP class does not renamed in XML

Hi guys,

What is the right way to implement rename refactoring of PHP classes in XML?

<someTag some-class="Some\Php\Class">

For now I am using DOM API, and implement MyConverter

public class MyConverter extends ResolvingConverter<PhpClass> implements CustomReferenceConverter 

with method

public PsiReference[] createReferences(GenericDomValue value, PsiElement element, ConvertContext context) {...

After that I can run Find Usages and my class presents in search results under section "Usages in XML description"

But when I do rename refactoring the class does not renamed in XML.

Then I implemented 

public class MyRenameProcessor extends RenamePsiElementProcessor {...

with method 

public void prepareRenaming(PsiElement element, String newName, Map<PsiElement, String> allRenames) {...

and just add needed psiElements to the map allRenames - finally - rename works in XML

The question is: is it correct way? or maybe better (more convenient/official ) once exists?

P.S. By the way, when I declare PsiClass instead of PhpClass here

MyGenericAttributeValue<PhpClass>

Debugger shows an error - can not find PsiClass... is it correct or there is something misconfigured from my side?