open (Net::SSH::Service::Process::Driver)

    # File lib/net/ssh/service/process/driver.rb, line 129
              def open( command )
                @log.debug "opening '#{command}'" if @log.debug?
                process = @handlers[ :open ].call( command )

                if block_given?
                  yield process
                  @connection.loop
                  return nil
                end

                process
              end