code: @Override
      public Map<String, Object> getValuesMap() throws AtlasException {
          Map<String, Object> m = new HashMap<>();
          for (String attr : fieldMapping.fields.keySet()) {
  //            int pos = fieldMapping.fieldNullPos.get(attr);
  //            if (  explicitSets[pos] ) {
                  m.put(attr, get(attr));
  //            }
          }
          return m;
      }
docs: /*
  Use only for json serialization
  @nonpublic