Confd subagent example

The Master/Subagent feature of NETCONF
To begin with I made changes in confd.conf of 1-2-3-start-query-model (master) - added subagents section outside the “confdConfig” end tag and started. Then I made the changes in 6-c_config and did ‘make all start’ - I got the below error:
Bad configuration: confd.conf:0: Internal error: {file_load_error,“Is implemented by a subagent, but subagent support is not enabled”}
Daemon died status=21
make: *** [start] Error 21

Then the master also closes the connection:
DEBUG EOF on socket to ConfD
terminate sub_read: -2
make: *** [start_subscriber] Error 1