someMethod() {
    // handle MyClass compatibility: Name is mapped to name
   ...
   // handle some future compatibility
   ...

   <continue deserialization>
}

class MyResourceFactoryImpl {
    public MyResource createResource(URI uri) {
        MyResource resource = new MyResource(uri);
        // options required for backwards compatibility support
        // see MyXmlHelper
        // see https://www.eclipse.org/forums/index.php/m/1449615/
        resource.getDefaultLoadOptions().put(XMLResource.OPTION_RECORD_UNKNOWN_FEATURE, Boolean.TRUE);
        resource.getDefaultLoadOptions().put(XMLResource.OPTION_LAX_FEATURE_PROCESSING, Boolean.TRUE);
        return resource;
    }
}

class MyXmlHelper {
    /*
     * Method is overridden to include backwards compatibility support to load old projects into a new model.
     * When we need to intercept before the XML is loaded into the model, which happens here.
     * See https://www.eclipse.org/forums/index.php/m/1449615/
     * 
     * (non-Javadoc)
     * @see org.eclipse.emf.ecore.xmi.impl.XMLHelperImpl#getFeature(org.eclipse.emf.ecore.EClass, java.lang.String, java.lang.String, boolean)
     */
    @Override
    public EStructuralFeature getFeature(EClass eClass, String namespaceURI, String name, boolean isElement) {
        String compatName = name;
        if (eClass == MymodelPackage.Literals.MyClass) {
            if ("Name".equals(name)) {
                // 1.x to 2.x compatibility (October 2014)
                //   1.x = MyClass attribute 'Name'
                //   2.x = MyBaseClass attribute 'name', shared by MyClass
                compatName = MymodelPackage.Literals.MY_BASE_CLASS__NAME.getName(); // 'n(!)ame'
            }
        }
        return super.getFeature(eClass, namespaceURI, compatName, isElement);
    }
}