return the current JSON string to JSON Data conversion callback.
Source position: fpjson.pp line 835
| function GetJSONStringParserHandler: TJSONStringParserHandler; | 
the previously installed handler, if any.
GetJSONStringParserHandler returns the handler installed by the last SetJSONStringParserHandler call.
| 
 | Install a JSON string to JSON Data conversion callback. | |
| 
 | Set the JSON parser handler. | |
| 
 | Get the current JSON parser handler. |