Mimic "objects" in search by "index_name"

sample.json

 {
 [...]
                  "name" : {
                     "fields" : {
                        "xname" : {
                           "index" : "analyzed",
                           "omit_norms" : false,
                           "type" : "string",
                           "include_in_all" : true
                        }
                     },
                     "type" : "multi_field",
                     "include_in_all" : true
                  },
                  "altname" : {
                     "index_name" : "xname",
                     "boost" : 0.5,
                     "omit_term_freq_and_positions" : true,
                     "omit_norms" : false,
                     "type" : "string",
                     "include_in_all" : true
                  }
 [...]

}