@Experimental(value=SOURCE_SINK)
See: Description
| Class | Description | 
|---|---|
| ChangeStreamMetrics | Class to aggregate metrics related functionality. | 
| ChangeStreamsConstants | Single place for defining the constants used in the  Spanner.readChangeStreams()connector. | 
| NameGenerator | This class generates a unique name for the partition metadata table, which is created when the
 Connector is initialized. |