OptionaldarkDark (true) or light (false) backdrop; omitted, unchanged.
Optionalenabledtrue shows Mica; false removes the backdrop set through setMica or setAcrylic.
Optionalvariantmica-alt for the tabbed variant; any other value is mica.
OptionalwindowTarget window: main or a popup id; omitted or empty, the calling window. There is no fallback to the main window: a caller that is not one of the plugin's windows fails with NOT_FOUND, and a DUI/CUI panel with PANEL_MODE_UNSUPPORTED.
Parameters for
window.setMicaEffect. Same aswindow.setMica.