anchor.diff:  === Distance Units
   
   Wherever distances need to be specified, such as the `distance` parameter in
  -the <<query-dsl-geo-distance-filter>>) or the `precision` parameter in the
  -<<query-dsl-geohash-cell-filter>>, the default unit if none is specified is
  +the <<query-dsl-geo-distance-filter>>), the default unit if none is specified is
   the meter. Distances can be specified in other units, such as `"1km"` or
   `"2mi"` (2 miles).
   
  
positive.code: 
  Statistics are returned in a format suitable for humans
  (eg `"exists_time": "1h"` or `"size": "1kb"`) and for computers
  (eg `"exists_time_in_millis": 3600000`` or `"size_in_bytes": 1024`).
  The human readable values can be turned off by adding `?human=false`
  to the query string. This makes sense when the stats results are
  being consumed by a monitoring tool, rather than intended for human
  
negative.code: open indices and if `closed` is specified then the wildcard expression is
  expanded only to closed indices. Also both values (`open,closed`) can be
  specified to expand to all indices.
  
  If `none` is specified then wildcard expansion will be disabled and if `all`
  is specified, wildcard expressions will expand to all indices (this is equivalent
  to specifying `open,closed`).
  
  The defaults settings for the above parameters depend on the api being used.
  