Allows iterating all children of a location.
Pass `NULL` to get the first child, and any child to get the next one.
Note that the reference to child is taken, meaning iterating all children is as simple as:
```c g_autoptr (GWeatherLocation) child = NULL; while ((child = gweather_location_next_child (location, child))) { // Do something with child } ```
| this |
the location to iterate |
| child |
the next child |
|
The next child, if one exists |