API: Query deal including associations with a single request

Is there are more effcient way, to GET a deal including all associations to line items, company and contact in less requests. Currently I have to execute a 7 requests to get the information:

- GET the deal

- GET the line item ids by querying the associations of a deal

- GET the line items from the line items API

- GET the contact id by querying the associations of a deal

- GET the contact from the contacts API

- GET the company id by querying the associations of a deal

- GET the company from the companies API

Found it by myself using the associations parameter

Do you have any example?