An extension that allows LV2 plugin UIs to notify the host about size changes, or for the host to notify plugin UIs about size changes.
A feature that allows the UI to notify the host about its current size, or request a size change. This feature corresponds to the LV2_UI_Resize_Feature struct, which should be passed with the feature URI http://lv2plug.in/ns/ext/ui-resize#UIResize. This struct may also be provided by the UI as extension data using the same URI, in which case it is used by the host to request that the UI change its size.