Trigger upon comments entity menu is generated

<?php
function my_component_init(){
		ossn_register_callback('comment', 'entityextra:menu', 'my_component_cb');
}
function my_component_cb($callback, $type, $params){
		// $params['entity'] contains entity object.
		ossn_register_menu_item('entityextra', array(
			'name' => 'name of menu',
			'class' => "comment-entity",
			'href' => "javascript:void(0)",
			'data-guid' => $params['entity']->guid,
			'text' => 'Text',
		));		
}
ossn_register_callback('ossn', 'init', 'my_component_init');