public void setNameMapping(String name, String alias) {
        List<String> list = nameMappings.get(name);
        if (list == null) {
            list = new ArrayList<String>();
            nameMappings.put(name, list);
        }
        list.add(alias);
    }
Adds an alternative name for a material

@param name The material name to be found in a .mesh.xml file
@param alias The material name to be found in a .material file
jme3-plugins/src/ogre/java/com/jme3/scene/plugins/ogre/matext/MaterialExtensionSet.java