next

Advances the iterator and retrieves the next member in the object.

If the end of the object is reached, `FALSE` is returned and member_name and member_node are set to invalid values. After that point, the this is invalid.

The order in which members are returned by the iterator is undefined. The iterator is invalidated if the object is modified during iteration.

You must use this function with an iterator initialized with [method@Json.ObjectIter.init]; using this function with an iterator initialized with [method@Json.ObjectIter.init_ordered] yields undefined behavior.

See also: [method@Json.ObjectIter.next_ordered]

Parameters:

this	a JSON object iterator
member_name	return location for the member name, or null to ignore
member_node	return location for the member value, or null to ignore

Returns:

`TRUE` if member_name and member_node are valid; `FALSE` if there are no more members