POST request
path - http://localhost:8181/restconf/operations/onem2m-simple-config:iplugin-cfg-key-get

body :
{
"input":

{ "plugin-name": "Onem2mExample", "instance-name": "default", "cfg-key": "testKey2" }

}

it testKey2 doesn`t exist it will return 200 ok with body:
{
"output":

{ "instance-name": "default", "plugin-name": "Onem2mExample" }

}

Should return 404 not found