Question from the Elasticsearch test

PUT _index_template/wld
{
 "index_patterns":["wld*"],
 "template":{
   "settings":{
     "number_of_shards": 1
    },
   "mappings":{
     "_source":{
       "enabled": true
      },
     "properties":{
       "host_name":{
         "type":"keyword"
        }
      }
    }
  }
}

PUT _index_template/wld
{
 "patterns":["wld*"],
 "template":{
   "settings":{
     "number_of_shards": 1
    },
   "mappings":{
     "_source":{
       "enabled": true
      },
     "properties":{
       "host_name":{
         "type":"keyword"
        }
      }
    }
  }
}

PUT _index_template/wld
{
 "index_patterns":["wld*"],
 "settings":{
     "number_of_shards": 1
    },
   "mappings":{
     "_source":{
       "enabled": true
      },
     "properties":{
       "host_name":{
         "type":"keyword"
        }
      }
    }
}

PUT _template/wld
{
 "index_patterns":["wld*"],
 "template":{
   "settings":{
     "number_of_shards": 1
    },
   "mappings":{
     "_source":{
       "enabled": true
      },
     "properties":{
       "host_name":{
         "type":"keyword"
        }
      }
    }
  }
}