code: function _compressArray(json, aKeys) {
      var nIndex,
        nLenKeys;
  
      for (nIndex = 0, nLenKeys = json.length; nIndex < nLenKeys; nIndex++) {
        json[nIndex] = JSONC.compress(json[nIndex], aKeys);
      }
    }
docs: Method to compress array objects
  @private
  @param json
  @param aKeys