anchor.diff:  
   Additional labels can be configured in the configuration file (see below).
   
  -<namespace> can be ommited or overrided - see <<Namespace-as-labels>>
  +`<namespace>` can be omitted or overridden - see <<Namespace-as-labels>> for
  +more information.
   
   == Configuration file
   
  
positive.code:       "/var/log/nginx/app1/access.log"
      ]
    }
    #metrics_override = { prefix = "myprefix" }
    #namespace_label = "vhost"
  
    labels {
      app = "application-one"
  
negative.code: -----------------
  ### Namespace as labels
  
  For historic reasons, this exporter exports separate metrics for different
  namespaces (because the namespace is part of the metric name). However, in many
  (most) cases, it's more convenient to have the same metric name across different
  namespaces (with different log formats and names).
  
  This can be done in two steps:
  