/// <summary>
 /// Get all the user assignments that were made for the processInstanceId
 /// It can also be done with the Query method.
 /// </summary>
 /// <param name="processInstanceId">The id of the process instance.</param>
 public Task <List <HistoricUserOperationLog> > GetHistoricAssignmentsOfProcess(string processInstanceId) => _api.GetHistoricAssignmentsOfProcess(processInstanceId);