The language manager. Type:

public TranslationStatusForm::buildForm(array

public TranslateFilterForm::resetForm(array &$form

public TranslateFilterForm::getFormId()

public LocaleSettingsForm::submitForm(array &$form

public ExportForm::submitForm(array &$form, FormStateInterface

public ExportForm::getFormId() Returns

public LocaleSettingsForm::getFormId()

public static ExportForm::create(ContainerInterface $container)

public TranslationStatusForm::validateForm(array