How to know when a mesh node has been configured?

Question

This might seem like a really banal question, but i could need some clarification on this. 
 My understanding is that the config_client should be used on the network provisioner node and the config_server should be used on all devices that should be provisioned and configured.
Is this true? 
 I am asking because i would like to register a callback function for when a device with a client model has been configured, but the config_server API doesn't seem support this.
This seems to indicate that the config_client should be used to configure clients and the config_server should be used to configure server models.
This just seems weird and unlikely. 
 Also, if i am right that the config_client should only be used be the provisioning device, then how should i indicate to a device with a client model, that it has been configured? 
 Edit 1: 
After looking around the info center, I have been convinced that the config_client should only be used by the provisioning device.
 Source . 
 I am still interested in knowing if it is possible to know when a device has been provisioned?

SørenHN · Accepted Answer

I have figured out my misunderstanding. 
 The configuring of a node is never "done" in the same way the provisioning of a device is.
That is, while the provisioning process has some well defined steps it has to go through before the process is complete.
The provisioner node can always reconfigure a node with the config_client.
It is therefore never completely done configuring a node. 
 It is possible to know when the configuring of a device is complete though, if you youself define how your node should be configured.
When the provisioner node receives a status message from the last step of the configuring of a device, you know the process is complete. 
 Therefor if your project is like the Light Switch example project from Mesh SDK 0.10, then when a CONFIG_OPCODE_MODEL_SUBSCRIPTION_STATUS message is received, the configuring is complete.

How to know when a mesh node has been configured?

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