toJson method
Implementation
Map toJson(){
Map _result = {};
if (fileReference != null) _result.addAll({"fileReference": fileReference});
if (version != null) _result.addAll({"version": version});
if (objectType != null) _result.addAll({"objectType": objectType});
_result.addAll({"notifications": notifications});
_result.addAll({"signerInfos": signerInfos});
return _result;
}