anchor.diff:  {
       "set-cluster-preferences" : [
         {"minimize": "cores"}
  -	]
  +    ]
   }
   ----
   
  
positive.code: }
  ----
  
  If you attempt to remove a policy that is being used by a collection then this command will fail to delete the policy until the collection itself is deleted.
negative.code: [source,json]
  ----
  {
      "set-cluster-policy": [
          {"replica": "<2", "shard": "#EACH", "node": "#ANY"}
      ]
  }
  ----
  
  