src/vs/editor/contrib/codeAction/codeActionCommands.ts/FixAllAction/constructor
class FixAllAction:	constructor() {
		super({
			id: fixAllCommandId,
			label: nls.localize('fixAll.label', "Fix All"),
			alias: 'Fix All',
			precondition: ContextKeyExpr.and(
				EditorContextKeys.writable,
				contextKeyForSupportedActions(CodeActionKind.SourceFixAll))
		});
	}