anchor.diff:  ----
   curl -X POST -H 'Content-type:application/json' --data-binary '{
     "replace-field":{
  -     "name":"sell-by",
  +     "name":"sell_by",
        "type":"date",
        "stored":false }
   }' http://localhost:8983/solr/gettingstarted/schema
  
positive.code: ----
  curl -X POST -H 'Content-type:application/json' --data-binary '{
    "add-field":{
       "name":"sell-by",
       "type":"pdate",
       "stored":true }
  }' http://localhost:8983/solr/gettingstarted/schema
  
negative.code:            "class":"solr.WordDelimiterFilterFactory",
             "preserveOriginal":"0" }]}},
     "add-field" : {
        "name":"sell_by",
        "type":"myNewTxtField",
        "stored":true }
  }' http://localhost:8983/solr/gettingstarted/schema
  