/// Get the topology's currently highest seen cluster time.
Get the topology's currently highest seen cluster time.
Get the topology ' s currently highest seen cluster time .
pub(crate) async fn cluster_time(&self) -> Option<ClusterTime> {
        self.state
            .read()
            .await
            .description
            .cluster_time()
            .map(Clone::clone)
    }
pub ( crate ) async fn cluster_time ( & self ) -> Option < ClusterTime > { self . state . read ( ) . await . description . cluster_time ( ) . map ( Clone :: clone ) }
Get the topology's currently highest seen cluster time.
Get the topology ' s currently highest seen cluster time .
&self