anchor.diff:  GET /_nodes/10.0.0.1/stats/process
   --------------------------------------------------
   
  -All stats can be explicitly requested via `/_nodes/stats/_all` or 
  +All stats can be explicitly requested via `/_nodes/stats/_all` or
   `/_nodes/stats?metric=_all`.
   
  -You can get information about indices stats on `node`, `indices`, or `shards` 
  +You can get information about indices stats on `node`, `indices`, or `shards`
   level.
   
   [source,console]
  
positive.code: 
  
  `<metric>`::
      (Optional, string) Limits the information returned to the specific metrics. 
      A comma-separated list of the following options: 
  +
  --
    `adaptive_selection`::
        Statistics about <<search-adaptive-replica,adaptive replica selection>>.
        
    `breaker`::
        Statistics about the field data circuit breaker.
        
    `discovery`::
        Statistics about the discovery.
            
    `fs`::
        File system information, data path, free disk space, read/write
        stats.
            
    `http`::
        HTTP connection information.
    
    `indices`::
        Indices stats about size, document count, indexing and deletion times, 
        search times, field cache size, merges and flushes.
        
    `ingest`::
        Statistics about ingest preprocessing.
    
    `jvm`::
        JVM stats, memory pool information, garbage collection, buffer
        pools, number of loaded/unloaded classes.
  
negative.code:       file descriptors.
  
    `thread_pool`::
        Statistics about each thread pool, including current size, queue and
        rejected tasks.
  
    `transport`::
        Transport statistics about sent and received bytes in cluster
        communication.
  --
  
  `<index_metric>`::
      (Optional, string) Limit the information returned for `indices` metric to
      the specific index metrics. It can be used only if `indices` (or `all`)
      metric is specified. Supported metrics are:
  +
  --
      * `completion`
      * `docs`
  