See: Description
| Interface | Description | 
|---|---|
| ArtifactRetrievalService | An implementation of the Beam Artifact Retrieval Service. | 
| Class | Description | 
|---|---|
| BeamFileSystemArtifactRetrievalService | An  ArtifactRetrievalServicethat usesFileSystemsas its backing storage and uses
 the artifact layout and retrieval token format produced byBeamFileSystemArtifactStagingService. | 
| BeamFileSystemArtifactStagingService | This implementation is experimental. |