Dynamic fixtures - new feature request

[marcinrogacki]

Exmaple usage:

/**
 * @test
 * @loadFixture myCustomizableStore
 * @dataProvider customizableStoreLocaleFixturesDataProvider
 */
public function my_test($fixture)
{
    $this->loadFixture($fixture);
}

pubic function customizableStoreLocaleFixturesDataProvider()
{
    return [
        [ 'localeOne' ],
        [ 'localeTwo' ],
    ];
}

Is it doable? Might be already available? Might be some tips where to start to implement such feature?