code: function(){
          var copy_fields = ['contactPoints'],
              temp_connection = {},
              connection = this._connection;
  
          for(var fk in copy_fields){
              temp_connection[copy_fields[fk]] = connection[copy_fields[fk]];
          }
          return new cql.Client(temp_connection);
      }
docs: Returns a client to be used only for keyspace assertion
  @return {Client} Node driver client
  @private