get_heading() public method

Get email heading.
public get_heading ( ) : string
return string
 /**
  * get_heading function.
  *
  * @access public
  * @return string
  */
 function get_heading()
 {
     return apply_filters('woocommerce_skip_one_email_heading_customer_subscription_unskipped', parent::get_heading(), $this->object);
 }