I want to alter the menu link in Drupal 8. In Drupal 7 we can achieve this using hook_translated_menu_link_alter

function module_translated_menu_link_alter(&$  item, $  map) {   global $  user;   if (!empty($  item['access'])) {     // Administrator will access all menu's.     if (strpos(current_path(), 'admin/structure/menu/manage/' . $  item['menu_name']) === 0 && user_access('administer menu')) {       return;     }     // If userid is equal to menu user id.     if ($  user->uid == 1) {       $  access = 'UNBLOCK';       break;     }    // Block menu.     else {       $  access = 'BLOCK';     }     // Access FALSE if Menu not for USER.     if ($  access == 'BLOCK') {       $  item['access'] = FALSE;     }   } } 

In D7 i am hiding/disabling menu based on some conditions like uid.

Similarly I want to alter the menu link in Drupal 8. How can I do it. Thank You.