| AggregateTimeTrackingCalculator | A util object that calculates an issue's aggregate Time Tracking values. |
| AggregateTimeTrackingCalculatorFactory | A factory to return AggregateTimeTrackingCalculator instances based on the type of
Issue in play. |
| IssueChangeHolder | This defines a simple object that can contain the changes that have occurred to an issue. |
| IssueImplAggregateTimeTrackingCalculator.PermissionChecker | Responsible for doing permission checks for an issue. |
| IssueIterator | |
| IssuesIterable | |
| IssueUpdater | |
| MovedIssueKeyStore |
