NewDataMover is the constructor for a data mover.

DestinationHandler is the data mover's destination dispatcher job handler.

DestinationJob is the destination dispatcher's job struct, it has a field for the data from the source connector.

SourceHandler is the data mover's source dispatcher job handler.

SourceJob has no fields because at this time we need no extra data, but it must be in place to implement the GetData interface.

Destination is the interface that a destination connector must implement.

Source is the interface that a source connector must implement.