Commit 1b20dbc6 authored by Collin Jackson's avatar Collin Jackson Committed by GitHub

Improve ExpansionTile docs (#11034)

parent 5f20f834
......@@ -18,8 +18,9 @@ const Duration _kExpand = const Duration(milliseconds: 200);
///
/// This widget is typically used with [ListView] to create an
/// "expand / collapse" list entry. When used with scrolling widgets like
/// [ListView], a unique [key] must be specified to enable the [ExpansionTile] to
/// save and restore its expanded state when it is scrolled in and out of view.
/// [ListView], a unique [PageStorageKey] must be specified to enable the
/// [ExpansionTile] to save and restore its expanded state when it is scrolled
/// in and out of view.
///
/// See also:
///
......
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