<?php

class ImportAction extends Action
{

    protected function setUp(): void
    {
        parent::setUp();


       $this->modalDescription(): Htmlable => $action->getModalAction('mymodalaction'));


// ...

        $this->registerModalActions([
            Action::make('mymodalaction')
                ->label('My modalaction')
                ->disabled(),
        ]);

// ...
    }
}

<?php

class ImportAction extends Action
{

    protected function setUp(): void
    {
        parent::setUp();


       $this->modalDescription(): Htmlable => $action->getModalAction('mymodalaction'));


// ...

        $this->registerModalActions([
            Action::make('mymodalaction')
                ->label('My modalaction')
                ->disabled(),
        ]);

// ...
    }
}