public function init() {
		elgg_register_plugin_hook_handler('entity:icon:url', 'all', new Handlers\EntityIconUrlHook());

		elgg_register_plugin_hook_handler('graph:properties', 'all', new Handlers\PropertiesHook());

		elgg_register_plugin_hook_handler('graph:properties', 'user', new Handlers\UserPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'group', new Handlers\GroupPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'site', new Handlers\SitePropertiesHook());

		elgg_register_plugin_hook_handler('graph:properties', 'object', new Handlers\ObjectPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'object:blog', new Handlers\BlogPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'object:file', new Handlers\FilePropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'object:messages', new Handlers\MessagePropertiesHook());

		elgg_register_plugin_hook_handler('graph:properties', 'metadata', new Handlers\ExtenderPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'annotation', new Handlers\ExtenderPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'relationship', new Handlers\RelationshipPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'river:item', new Handlers\RiverPropertiesHook());

	}
public function init() {
		elgg_register_plugin_hook_handler('entity:icon:url', 'all', new Handlers\EntityIconUrlHook());

		elgg_register_plugin_hook_handler('graph:properties', 'all', new Handlers\PropertiesHook());

		elgg_register_plugin_hook_handler('graph:properties', 'user', new Handlers\UserPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'group', new Handlers\GroupPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'site', new Handlers\SitePropertiesHook());

		elgg_register_plugin_hook_handler('graph:properties', 'object', new Handlers\ObjectPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'object:blog', new Handlers\BlogPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'object:file', new Handlers\FilePropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'object:messages', new Handlers\MessagePropertiesHook());

		elgg_register_plugin_hook_handler('graph:properties', 'metadata', new Handlers\ExtenderPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'annotation', new Handlers\ExtenderPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'relationship', new Handlers\RelationshipPropertiesHook());
		elgg_register_plugin_hook_handler('graph:properties', 'river:item', new Handlers\RiverPropertiesHook());

	}
public function init ( ) { elgg_register_plugin_hook_handler ( 'entity:icon:url' , 'all' , new Handlers \ EntityIconUrlHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'all' , new Handlers \ PropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'user' , new Handlers \ UserPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'group' , new Handlers \ GroupPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'site' , new Handlers \ SitePropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'object' , new Handlers \ ObjectPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'object:blog' , new Handlers \ BlogPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'object:file' , new Handlers \ FilePropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'object:messages' , new Handlers \ MessagePropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'metadata' , new Handlers \ ExtenderPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'annotation' , new Handlers \ ExtenderPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'relationship' , new Handlers \ RelationshipPropertiesHook ( ) ) ; elgg_register_plugin_hook_handler ( 'graph:properties' , 'river:item' , new Handlers \ RiverPropertiesHook ( ) ) ; }
'init','system' callback
init system callback