Function render 

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

Renders the statistics dataflow.