| Interface | Description | 
|---|---|
| ArtifactTransferListener | |
| ArtifactTransferResource | Describes a resource being uploaded or downloaded by the repository system. | 
| MirrorSelector | Handles the selection of mirrors for repositories. | 
| RepositorySystem | 
| Class | Description | 
|---|---|
| ArtifactTransferEvent | TransferEvent is used to notify TransferListeners about progress
 in transfer of resources form/to the repository | 
| DefaultMirrorSelector | |
| DelegatingLocalArtifactRepository | Deprecated | 
| LocalArtifactRepository | |
| MavenArtifactMetadata | |
| MetadataGraph | This is the main graph data structure used by the RepositorySystem to present tree and graph objects. | 
| MetadataGraphNode | MetadataGraph node - as it's a directed graph - holds adjacency lists for incident and exident nodes | 
| MetadataResolutionRequest | |
| MetadataResolutionResult | |
| Proxy | |
| UserLocalArtifactRepository | 
| Exception | Description | 
|---|---|
| ArtifactDoesNotExistException | |
| ArtifactTransferFailedException | |
| LocalRepositoryNotAccessibleException | Signals a failure to store files within the local repository. | 
| VersionNotFoundException | Thrown if a dependency has an invalid version. | 
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