public async Task<BoxTaskAssignment> GetTaskAssignmentAsync(string taskAssignmentId)
{
taskAssignmentId.ThrowIfNull("taskAssignmentId");
BoxRequest request = new BoxRequest(_config.TaskAssignmentsEndpointUri, taskAssignmentId)
.Method(RequestMethod.Get);
IBoxResponse<BoxTaskAssignment> response = await ToResponseAsync<BoxTaskAssignment>(request).ConfigureAwait(false);
return response.ResponseObject;
}