Each delegateObject contains the following attributes:
approver– Specifies the approver of this work item.
delegator– Specifies the initial, or first delegator, for the work item. This user is set as the <WorkItemDelegator> for the work item.
delegators– Lists delegator names ordered from first to last (before the final approver). This list of users is set as the <WorkItemDelegators> element for a manual action. If no delegation was found, this value is null.