docs: private void initDescriptor() throws CmsXmlException, CmsException {
  
          if (m_bundleType.equals(CmsMessageBundleEditorTypes.BundleType.DESCRIPTOR)) {
              m_desc = m_resource;
          } else {
              //First try to read from same folder like resource, if it fails use CmsMessageBundleEditorTypes.getDescriptor()
              try {
                  m_desc = m_cms.readResource(m_sitepath + m_basename + CmsMessageBundleEditorTypes.Descriptor.POSTFIX);
              } catch (CmsVfsResourceNotFoundException e) {
                  m_desc = CmsMessageBundleEditorTypes.getDescriptor(m_cms, m_basename);
              }
          }
          unmarshalDescriptor();
  
      }