Check which elements are null.
Source position: fpjson.pp line 611
|  public property TJSONArray.Nulls[Index: Integer] : Boolean | 
Nulls gives direct access to the TJSONData.IsNull property when reading. It is then equivalent to accessing
Items[Index].IsNull
| 
 | The native JSON data type represented by this object. | |
| 
 | Indexed access to sub-items. | |
| 
 | Is the data a null value ? | |
| 
 | JSON types of elements in the array. |