anchor.diff:  `version`::
   		{es} version running on this node.
   
  +The `os` flag can be set to retrieve information that concern the operating 
   system:
   
   `os.refresh_interval_in_millis`::
  
positive.code: // CONSOLE
  
  The `_all` flag can be set to return all the information - or you can omit it.
  
  If `plugins` is specified, the result will contain details about the installed 
  plugins and modules:
  
negative.code: // TESTRESPONSE[s/"build_hash": "587409e"/"build_hash": $body.$_path/]
  // TESTRESPONSE[s/"roles": \[[^\]]*\]/"roles": $body.$_path/]
  // TESTRESPONSE[s/"attributes": \{[^\}]*\}/"attributes": $body.$_path/]
  // TESTRESPONSE[s/"processors": \[[^\]]*\]/"processors": $body.$_path/]