Inserts @child in the position after @sibling in the list of children.
If @sibling is NULL, inserts @child at the first position.
the widget to insert
the sibling after which to insert @child
the [class@LeafletPage] for @child
1.0
See Implementation
Inserts @child in the position after @sibling in the list of children.
If @sibling is NULL, inserts @child at the first position.