diff --git a/mixin/polyfill.php b/mixin/polyfill.php
index ef111e6..f57c5eb 100644
--- a/mixin/polyfill.php
+++ b/mixin/polyfill.php
@@ -1,458 +1,5 @@
 <?php
 
-// AUTO-GENERATED FILE -- Civix may overwrite any changes made to this file
-
-/**
- * The ExtensionUtil class provides small stubs for accessing resources of this
- * extension.
- */
-class CRM_Bij1rules_ExtensionUtil {
-  const SHORT_NAME = 'bij1rules';
-  const LONG_NAME = 'bij1rules';
-  const CLASS_PREFIX = 'CRM_Bij1rules';
-
-  /**
-   * Translate a string using the extension's domain.
-   *
-   * If the extension doesn't have a specific translation
-   * for the string, fallback to the default translations.
-   *
-   * @param string $text
-   *   Canonical message text (generally en_US).
-   * @param array $params
-   * @return string
-   *   Translated text.
-   * @see ts
-   */
-  public static function ts($text, $params = []) {
-    if (!array_key_exists('domain', $params)) {
-      $params['domain'] = [self::LONG_NAME, NULL];
-    }
-    return ts($text, $params);
-  }
-
-  /**
-   * Get the URL of a resource file (in this extension).
-   *
-   * @param string|NULL $file
-   *   Ex: NULL.
-   *   Ex: 'css/foo.css'.
-   * @return string
-   *   Ex: 'http://example.org/sites/default/ext/org.example.foo'.
-   *   Ex: 'http://example.org/sites/default/ext/org.example.foo/css/foo.css'.
-   */
-  public static function url($file = NULL) {
-    if ($file === NULL) {
-      return rtrim(CRM_Core_Resources::singleton()->getUrl(self::LONG_NAME), '/');
-    }
-    return CRM_Core_Resources::singleton()->getUrl(self::LONG_NAME, $file);
-  }
-
-  /**
-   * Get the path of a resource file (in this extension).
-   *
-   * @param string|NULL $file
-   *   Ex: NULL.
-   *   Ex: 'css/foo.css'.
-   * @return string
-   *   Ex: '/var/www/example.org/sites/default/ext/org.example.foo'.
-   *   Ex: '/var/www/example.org/sites/default/ext/org.example.foo/css/foo.css'.
-   */
-  public static function path($file = NULL) {
-    // return CRM_Core_Resources::singleton()->getPath(self::LONG_NAME, $file);
-    return __DIR__ . ($file === NULL ? '' : (DIRECTORY_SEPARATOR . $file));
-  }
-
-  /**
-   * Get the name of a class within this extension.
-   *
-   * @param string $suffix
-   *   Ex: 'Page_HelloWorld' or 'Page\\HelloWorld'.
-   * @return string
-   *   Ex: 'CRM_Foo_Page_HelloWorld'.
-   */
-  public static function findClass($suffix) {
-    return self::CLASS_PREFIX . '_' . str_replace('\\', '_', $suffix);
-  }
-
-}
-
-use CRM_Bij1rules_ExtensionUtil as E;
-
-/**
- * (Delegated) Implements hook_civicrm_config().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_config
- */
-function _bij1rules_civix_civicrm_config(&$config = NULL) {
-  static $configured = FALSE;
-  if ($configured) {
-    return;
-  }
-  $configured = TRUE;
-
-  $template =& CRM_Core_Smarty::singleton();
-
-  $extRoot = dirname(__FILE__) . DIRECTORY_SEPARATOR;
-  $extDir = $extRoot . 'templates';
-
-  if (is_array($template->template_dir)) {
-    array_unshift($template->template_dir, $extDir);
-  }
-  else {
-    $template->template_dir = [$extDir, $template->template_dir];
-  }
-
-  $include_path = $extRoot . PATH_SEPARATOR . get_include_path();
-  set_include_path($include_path);
-}
-
-/**
- * (Delegated) Implements hook_civicrm_xmlMenu().
- *
- * @param $files array(string)
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_xmlMenu
- */
-function _bij1rules_civix_civicrm_xmlMenu(&$files) {
-  foreach (_bij1rules_civix_glob(__DIR__ . '/xml/Menu/*.xml') as $file) {
-    $files[] = $file;
-  }
-}
-
-/**
- * Implements hook_civicrm_install().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_install
- */
-function _bij1rules_civix_civicrm_install() {
-  _bij1rules_civix_civicrm_config();
-  if ($upgrader = _bij1rules_civix_upgrader()) {
-    $upgrader->onInstall();
-  }
-}
-
-/**
- * Implements hook_civicrm_postInstall().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_postInstall
- */
-function _bij1rules_civix_civicrm_postInstall() {
-  _bij1rules_civix_civicrm_config();
-  if ($upgrader = _bij1rules_civix_upgrader()) {
-    if (is_callable([$upgrader, 'onPostInstall'])) {
-      $upgrader->onPostInstall();
-    }
-  }
-}
-
-/**
- * Implements hook_civicrm_uninstall().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_uninstall
- */
-function _bij1rules_civix_civicrm_uninstall() {
-  _bij1rules_civix_civicrm_config();
-  if ($upgrader = _bij1rules_civix_upgrader()) {
-    $upgrader->onUninstall();
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_enable().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_enable
- */
-function _bij1rules_civix_civicrm_enable() {
-  _bij1rules_civix_civicrm_config();
-  if ($upgrader = _bij1rules_civix_upgrader()) {
-    if (is_callable([$upgrader, 'onEnable'])) {
-      $upgrader->onEnable();
-    }
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_disable().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_disable
- * @return mixed
- */
-function _bij1rules_civix_civicrm_disable() {
-  _bij1rules_civix_civicrm_config();
-  if ($upgrader = _bij1rules_civix_upgrader()) {
-    if (is_callable([$upgrader, 'onDisable'])) {
-      $upgrader->onDisable();
-    }
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_upgrade().
- *
- * @param $op string, the type of operation being performed; 'check' or 'enqueue'
- * @param $queue CRM_Queue_Queue, (for 'enqueue') the modifiable list of pending up upgrade tasks
- *
- * @return mixed
- *   based on op. for 'check', returns array(boolean) (TRUE if upgrades are pending)
- *   for 'enqueue', returns void
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_upgrade
- */
-function _bij1rules_civix_civicrm_upgrade($op, CRM_Queue_Queue $queue = NULL) {
-  if ($upgrader = _bij1rules_civix_upgrader()) {
-    return $upgrader->onUpgrade($op, $queue);
-  }
-}
-
-/**
- * @return CRM_Bij1rules_Upgrader
- */
-function _bij1rules_civix_upgrader() {
-  if (!file_exists(__DIR__ . '/CRM/Bij1rules/Upgrader.php')) {
-    return NULL;
-  }
-  else {
-    return CRM_Bij1rules_Upgrader_Base::instance();
-  }
-}
-
-/**
- * Search directory tree for files which match a glob pattern.
- *
- * Note: Dot-directories (like "..", ".git", or ".svn") will be ignored.
- * Note: Delegate to CRM_Utils_File::findFiles(), this function kept only
- * for backward compatibility of extension code that uses it.
- *
- * @param string $dir base dir
- * @param string $pattern , glob pattern, eg "*.txt"
- *
- * @return array
- */
-function _bij1rules_civix_find_files($dir, $pattern) {
-  return CRM_Utils_File::findFiles($dir, $pattern);
-}
-
-/**
- * (Delegated) Implements hook_civicrm_managed().
- *
- * Find any *.mgd.php files, merge their content, and return.
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_managed
- */
-function _bij1rules_civix_civicrm_managed(&$entities) {
-  $mgdFiles = _bij1rules_civix_find_files(__DIR__, '*.mgd.php');
-  sort($mgdFiles);
-  foreach ($mgdFiles as $file) {
-    $es = include $file;
-    foreach ($es as $e) {
-      if (empty($e['module'])) {
-        $e['module'] = E::LONG_NAME;
-      }
-      if (empty($e['params']['version'])) {
-        $e['params']['version'] = '3';
-      }
-      $entities[] = $e;
-    }
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_caseTypes().
- *
- * Find any and return any files matching "xml/case/*.xml"
- *
- * Note: This hook only runs in CiviCRM 4.4+.
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_caseTypes
- */
-function _bij1rules_civix_civicrm_caseTypes(&$caseTypes) {
-  if (!is_dir(__DIR__ . '/xml/case')) {
-    return;
-  }
-
-  foreach (_bij1rules_civix_glob(__DIR__ . '/xml/case/*.xml') as $file) {
-    $name = preg_replace('/\.xml$/', '', basename($file));
-    if ($name != CRM_Case_XMLProcessor::mungeCaseType($name)) {
-      $errorMessage = sprintf("Case-type file name is malformed (%s vs %s)", $name, CRM_Case_XMLProcessor::mungeCaseType($name));
-      throw new CRM_Core_Exception($errorMessage);
-    }
-    $caseTypes[$name] = [
-      'module' => E::LONG_NAME,
-      'name' => $name,
-      'file' => $file,
-    ];
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_angularModules().
- *
- * Find any and return any files matching "ang/*.ang.php"
- *
- * Note: This hook only runs in CiviCRM 4.5+.
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_angularModules
- */
-function _bij1rules_civix_civicrm_angularModules(&$angularModules) {
-  if (!is_dir(__DIR__ . '/ang')) {
-    return;
-  }
-
-  $files = _bij1rules_civix_glob(__DIR__ . '/ang/*.ang.php');
-  foreach ($files as $file) {
-    $name = preg_replace(':\.ang\.php$:', '', basename($file));
-    $module = include $file;
-    if (empty($module['ext'])) {
-      $module['ext'] = E::LONG_NAME;
-    }
-    $angularModules[$name] = $module;
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_themes().
- *
- * Find any and return any files matching "*.theme.php"
- */
-function _bij1rules_civix_civicrm_themes(&$themes) {
-  $files = _bij1rules_civix_glob(__DIR__ . '/*.theme.php');
-  foreach ($files as $file) {
-    $themeMeta = include $file;
-    if (empty($themeMeta['name'])) {
-      $themeMeta['name'] = preg_replace(':\.theme\.php$:', '', basename($file));
-    }
-    if (empty($themeMeta['ext'])) {
-      $themeMeta['ext'] = E::LONG_NAME;
-    }
-    $themes[$themeMeta['name']] = $themeMeta;
-  }
-}
-
-/**
- * Glob wrapper which is guaranteed to return an array.
- *
- * The documentation for glob() says, "On some systems it is impossible to
- * distinguish between empty match and an error." Anecdotally, the return
- * result for an empty match is sometimes array() and sometimes FALSE.
- * This wrapper provides consistency.
- *
- * @link http://php.net/glob
- * @param string $pattern
- *
- * @return array
- */
-function _bij1rules_civix_glob($pattern) {
-  $result = glob($pattern);
-  return is_array($result) ? $result : [];
-}
-
-/**
- * Inserts a navigation menu item at a given place in the hierarchy.
- *
- * @param array $menu - menu hierarchy
- * @param string $path - path to parent of this item, e.g. 'my_extension/submenu'
- *    'Mailing', or 'Administer/System Settings'
- * @param array $item - the item to insert (parent/child attributes will be
- *    filled for you)
- *
- * @return bool
- */
-function _bij1rules_civix_insert_navigation_menu(&$menu, $path, $item) {
-  // If we are done going down the path, insert menu
-  if (empty($path)) {
-    $menu[] = [
-      'attributes' => array_merge([
-        'label'      => CRM_Utils_Array::value('name', $item),
-        'active'     => 1,
-      ], $item),
-    ];
-    return TRUE;
-  }
-  else {
-    // Find an recurse into the next level down
-    $found = FALSE;
-    $path = explode('/', $path);
-    $first = array_shift($path);
-    foreach ($menu as $key => &$entry) {
-      if ($entry['attributes']['name'] == $first) {
-        if (!isset($entry['child'])) {
-          $entry['child'] = [];
-        }
-        $found = _bij1rules_civix_insert_navigation_menu($entry['child'], implode('/', $path), $item);
-      }
-    }
-    return $found;
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_navigationMenu().
- */
-function _bij1rules_civix_navigationMenu(&$nodes) {
-  if (!is_callable(['CRM_Core_BAO_Navigation', 'fixNavigationMenu'])) {
-    _bij1rules_civix_fixNavigationMenu($nodes);
-  }
-}
-
-/**
- * Given a navigation menu, generate navIDs for any items which are
- * missing them.
- */
-function _bij1rules_civix_fixNavigationMenu(&$nodes) {
-  $maxNavID = 1;
-  array_walk_recursive($nodes, function($item, $key) use (&$maxNavID) {
-    if ($key === 'navID') {
-      $maxNavID = max($maxNavID, $item);
-    }
-  });
-  _bij1rules_civix_fixNavigationMenuItems($nodes, $maxNavID, NULL);
-}
-
-function _bij1rules_civix_fixNavigationMenuItems(&$nodes, &$maxNavID, $parentID) {
-  $origKeys = array_keys($nodes);
-  foreach ($origKeys as $origKey) {
-    if (!isset($nodes[$origKey]['attributes']['parentID']) && $parentID !== NULL) {
-      $nodes[$origKey]['attributes']['parentID'] = $parentID;
-    }
-    // If no navID, then assign navID and fix key.
-    if (!isset($nodes[$origKey]['attributes']['navID'])) {
-      $newKey = ++$maxNavID;
-      $nodes[$origKey]['attributes']['navID'] = $newKey;
-      $nodes[$newKey] = $nodes[$origKey];
-      unset($nodes[$origKey]);
-      $origKey = $newKey;
-    }
-    if (isset($nodes[$origKey]['child']) && is_array($nodes[$origKey]['child'])) {
-      _bij1rules_civix_fixNavigationMenuItems($nodes[$origKey]['child'], $maxNavID, $nodes[$origKey]['attributes']['navID']);
-    }
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_alterSettingsFolders().
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_alterSettingsFolders
- */
-function _bij1rules_civix_civicrm_alterSettingsFolders(&$metaDataFolders = NULL) {
-  $settingsDir = __DIR__ . DIRECTORY_SEPARATOR . 'settings';
-  if (!in_array($settingsDir, $metaDataFolders) && is_dir($settingsDir)) {
-    $metaDataFolders[] = $settingsDir;
-  }
-}
-
-/**
- * (Delegated) Implements hook_civicrm_entityTypes().
- *
- * Find any *.entityType.php files, merge their content, and return.
- *
- * @link https://docs.civicrm.org/dev/en/latest/hooks/hook_civicrm_entityTypes
- */
-function _bij1rules_civix_civicrm_entityTypes(&$entityTypes) {
-  $entityTypes = array_merge($entityTypes, []);
-}
-<?php
-
 /**
  * When deploying on systems that lack mixin support, fake it.
  *