writing back to soapUI using the API to modify names

Does anybody have an example on how to load a soapUI project into the memory using the XML DOM, then parse it and index all names and references to those names automatically?

For instance if I have:
TestSuite1
TestCase1
TestStep1 and TestStep2

THEN, I would like to rename them programmatically to:

1TestSuite1
1.1TestCase1
1.1.1TestStep1 and 1.1.2TestStep2

I was thinking to use something like this:

    public TestProject read(InputStream inputStream)
    {
        SoapuiProjectDocumentConfig documentConfig;
        documentConfig = SoapuiProjectDocumentConfig.Factory.parse(inputStream);
        ProjectConfig soapuiProject = documentConfig.getSoapuiProject();
  // createTestProject loads the project and modifies it
        TestProject testProject = createTestProject(soapuiProject);
  return testProject;
 }

and then

 public void write(TestProject testProject, OutputStream outputStream)
    {
        SoapuiProjectDocumentConfig documentConfig;
        documentConfig = SoapuiProjectDocumentConfig.Factory.parse(outputStream);
        ProjectConfig soapuiProject = documentConfig.setSoapuiProject(ProjectConfig soapuiProject);
 }

Any input into this is welcome. One fear I have for this is the referential integrity not being preserved where objects (relying on the changing names) in the TestProject are not going to be automatically updated.