public Cassandra doWithClusterBuilder(final Consumer<Cluster.Builder> configurer) {
    requireNonNull(configurer, "ClusterBuilder conf callback required.");
    return doWithClusterBuilder((b, c) -> configurer.accept(b));
  }
public Cassandra doWithClusterBuilder(final Consumer<Cluster.Builder> configurer) {
    requireNonNull(configurer, "ClusterBuilder conf callback required.");
    return doWithClusterBuilder((b, c) -> configurer.accept(b));
  }
public Cassandra doWithClusterBuilder ( final Consumer < Cluster . Builder > configurer ) { requireNonNull ( configurer , "ClusterBuilder conf callback required." ) ; return doWithClusterBuilder ( ( b , c ) -> configurer . accept ( b ) ) ; }
Configure a cluster before creating it.

@param configurer Configurer callback.
@return This module.
Configure a cluster before creating it .