| AvroUtil | Class for Avro-related utility methods. | 
| CommitComplete | A control event payload for events sent by a coordinator that indicates it has completed a commit
 cycle. | 
| CommitToTable | A control event payload for events sent by a coordinator that indicates it has completed a commit
 cycle. | 
| DataComplete | A control event payload for events sent by a worker that indicates it has finished sending all
 data for a commit request. | 
| DataWritten | A control event payload for events sent by a worker that contains the table data that has been
 written and is ready to commit. | 
| Event | Class representing all events produced to the control topic. | 
| StartCommit | A control event payload for events sent by a coordinator to request workers to send back the
 table data that has been written and is ready to commit. | 
| TableReference | Element representing a table identifier, with namespace and name. | 
| TopicPartitionOffset | Element representing an offset, with topic name, partition number, and offset. |