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-Custom Group Providers
-======================
-
-Kanboard is able to load groups from an external system.
-This feature is mainly used for project permissions.
-
-Project managers can allow access to a project for a group.
-The end-user will use an auto-complete box and search for a group.
-
-Each time a group query is executed, all registered group providers are executed.
-
-Group Provider Workflow
------------------------
-
-1. The end-user start to type the group name in the auto-complete field
-2. The `GroupManager` class will execute the query across all registered group providers
-3. Results are merged and returned to the user interface
-4. After selecting a group, the information of the group are synced to the local database if necessary
-
-Group Provider Interface
-------------------------
-
-Interface to implement: `Kanboard\Core\Group\GroupProviderInterface`.
-
-Classes that implements this interface abstract the group information, there are only 3 methods:
-
-- `getInternalId()`: Get internal database id, return 0 otherwise
-- `getExternalId()`: Get external unique id
-- `getName()`: Get group name
-
-Kanboard will use the external id to sync with the local database.
-
-Group Backend Provider Interface
---------------------------------
-
-Interface to implement: `Kanboard\Core\Group\GroupBackendProviderInterface`.
-
-This interface requires only one method: `find($input)`.
-The argument `$input` is the text entered from the user interface.
-
-This method must return a list of `GroupProviderInterface`, this is the result of the search.
-
-Backend Registration from Plugins
----------------------------------
-
-In the method `initialize()` of your plugin register your custom backend like that:
-
-```php
-$groupManager->register(new MyCustomLdapBackendGroupProvider($this->container));
-```
-
-Examples
---------
-
-- [Group providers included in Kanboard (LDAP and Database)](https://github.com/kanboard/kanboard/tree/master/app/Group)