'Upload a translation file.
Arguments:
transcript_name (str):
language_code (str):'

def upload_translation(self, transcript_name, language_code):

    self.click_button('translation_add')
    translations_count = self.translations_count()
    self.select_translation_language(language_code, (translations_count - 1))
    self.upload_asset(transcript_name, asset_type='transcript', index=(translations_count - 1))
