init() {
			if (!L.env.sessionid)
				return;

			return uci.changes().then(L.bind(this.renderChangeIndicator, this));
		}
@class
@memberof LuCI.ui
@hideconstructor
@classdesc

The `changes` class encapsulates logic for visualizing, applying,
confirming and reverting staged UCI changesets.

This class is automatically instantiated as part of `LuCI.ui`. To use it
in views, use `'require ui'` and refer to `ui.changes`. To import it in
external JavaScript, use `L.require("ui").then(...)` and access the
`changes` property of the class instance value.