Returns the tasks associated with a record

Parameter:

- url: String. URL of the service. It is assumed that the url contains 3 parameters to replace them: <type_documentary>, <contentref>, <ticket>.

- headers: List.

- type_documentary: String. Associated documentary type.

- contentref: String. Node/document identifier.

- ticket: String: Ticket.

Return:

-  {:ok, details} | {:error, message} | Exception