code: private static void createLanguageAliases(TypeSpec.Builder type, Map<String, String> languageAliases) {
      MethodSpec.Builder method = MethodSpec.methodBuilder("registerLanguageAliases")
          .addModifiers(PRIVATE, STATIC);
      
      for (Map.Entry<String, String> entry : languageAliases.entrySet()) {
        method.addStatement("addLanguageAlias($S, $S)", 
            entry.getKey(), entry.getValue());
      }
      
      type.addMethod(method.build());
    }
docs: Create language alias mapping.