code: def retrieve_approver_email_list(self, domain, product_id):
          
  
          response = self.request(E.retrieveApproverEmailListSslCertRequest(
              E.domain(domain),
              E.productId(product_id)
          ))
  
          return [str(i) for i in response.data.array[0].item]
docs: Retrieve the list of allowed approver email addresses.