| Interface | Description | 
|---|---|
| GrailsPluginInfo | Base interface that just contains information about a particular plugin. | 
| Class | Description | 
|---|---|
| GrailsVersionUtils | |
| VersionComparator | A comparator capable of sorting versions from from newest to oldest | 
| Exception | Description | 
|---|---|
| InvalidVersionException | Throw when a specified version number is invalid. |