def close
      connection.protocol::DbClose.new(params).process(connection)
      @session = OrientdbBinary::OperationTypes::NEW_SESSION
      @clusters = nil
    end
def close
      connection.protocol::DbClose.new(params).process(connection)
      @session = OrientdbBinary::OperationTypes::NEW_SESSION
      @clusters = nil
    end
Closes database

 @since 1.0