src/main/java/com/github/ddth/cql/SessionManager.java
protected Cluster createCluster(ClusterIdentifier ci) {
        return CqlUtils.newCluster(ci.hostsAndPorts, ci.username, ci.password, getConfiguration());
    }
protected Cluster createCluster(ClusterIdentifier ci) {
        return CqlUtils.newCluster(ci.hostsAndPorts, ci.username, ci.password, getConfiguration());
    }
Create a {@link Cluster} instance.

@param ci
@return
@since 0.4.0