WP_Screen::get_help_tabs()

	public function get_help_tabs() {
		$help_tabs = $this->_help_tabs;

		$priorities = array();
		foreach ( $help_tabs as $help_tab ) {
			if ( isset( $priorities[ $help_tab['priority'] ] ) ) {
				$priorities[ $help_tab['priority'] ][] = $help_tab;
			} else {
				$priorities[ $help_tab['priority'] ] = array( $help_tab );
			}
		}

		ksort( $priorities );

		$sorted = array();
		foreach ( $priorities as $list ) {
			foreach ( $list as $tab ) {
				$sorted[ $tab['id'] ] = $tab;
			}
		}

		return $sorted;
	}