anchor.diff:  ----
   // TEST[setup:setup-snapshots]
   
  -. Delete all existing indices and data streams on the cluster, including all
  -system indices.
  +. Delete existing indices and data streams on the cluster.
   +
   [source,console]
   ----
  
positive.code: WARNING: If the
  <<action-destructive-requires-name,`action.destructive_requires_name`>> cluster
  setting is `false`, don't use the <<indices-delete-index,delete index API>> to
  target the `*` or `.*` wildcard expression. If you use {es}'s security features,
  this will delete system indices required for authentication. To delete all
  regular indices, use `*,-.*` instead.
  
  [source,console]
  ----
  
negative.code: streams in the snapshot, including system indices. If your cluster already
  contains one or more of these system indices, the request will return an error.
  
  To avoid this error, specify the indices and data streams to restore. To exclude
  system indices and other index names that begin with a dot (`.`), append the
  `-.*` wildcard pattern. To restore all indices and data streams except dot
  indices, use `*,-.*`.
  
  [source,console]
  ----
  