code: def _get_metadata_for_region(region_code):
      
      country_calling_code = country_code_for_region(region_code)
      main_country = region_code_for_country_code(country_calling_code)
      # Set to a default instance of the metadata. This allows us to
      # function with an incorrect region code, even if formatting only
      # works for numbers specified with "+".
      return PhoneMetadata.metadata_for_region(main_country, _EMPTY_METADATA)
docs: The metadata needed by this class is the same for all regions
      sharing the same country calling code. Therefore, we return the
      metadata for "main" region for this country calling code.