private function find_main_submenu() {
			global $submenu;

			$top_level_menu_slug = $this->get_top_level_menu_slug();

			if ( ! isset( $submenu[ $top_level_menu_slug ] ) ) {
				return false;
			}

			$submenu_slug = $this->get_raw_slug();

			$position   = - 1;
			$found_submenu = false;

			$hook_name = get_plugin_page_hookname( $submenu_slug, '' );

			foreach ( $submenu[ $top_level_menu_slug ] as $pos => $sub ) {
				if ( $submenu_slug === $sub[2] ) {
					$position   = $pos;
					$found_submenu = $sub;
				}
			}

			if ( false === $found_submenu ) {
				return false;
			}

			return array(
				'menu'        => $found_submenu,
				'parent_slug' => $top_level_menu_slug,
				'position'    => $position,
				'hook_name'   => $hook_name
			);
		}