Why isn't it the same?

public function chooseLinkTarget(): ActionGroup
{
    return ActionGroup::make([
        $this->createLinkToProject(),
    ]);
}

protected function createLinkToProject()
{
    return CreateLinkToProject::make();
}

public function chooseLinkTargetType(): ActionGroup
{
    return ActionGroup::make([
        CreateLinkToProject::make(),
    ]);
}