public function testGetGeneratorPdfLetter()
{
$generator = GeneratorSelector::select('pdf-letter');
$this->assertInstanceOf('ConvertGenerator', $generator);
$this->assertEquals('application/pdf', $generator->getMimeType());
}
static function forLanguage($language, $format, $options)
{
return new BookCreator(new BookProvider(new Api($language), $options), GeneratorSelector::select($format));
}