Converts GrrMessage into a set of RDFValues.

    Args:
      metadata: ExportedMetadata to be used for conversion.
      grr_message: GrrMessage to be converted.
      token: Security token.

    Returns:
      List or generator with resulting RDFValues.

def Convert(self, metadata, grr_message, token=None):
    """Converts GrrMessage into a set of RDFValues.

    Args:
      metadata: ExportedMetadata to be used for conversion.
      grr_message: GrrMessage to be converted.
      token: Security token.

    Returns:
      List or generator with resulting RDFValues.
    """
    return self.BatchConvert([(metadata, grr_message)], token=token)