Function render 

pub(crate) fn render<G: Scope<Timestamp = GtidPartition>>(
    scope: G,
    config: RawSourceCreationConfig,
    connection: MySqlSourceConnection,
    resume_uppers: impl Stream<Item = Antichain<GtidPartition>> + 'static,
) -> (StreamVec<G, ReplicationError>, StreamVec<G, Probe<GtidPartition>>, PressOnDropButton)

Renders the statistics dataflow.