def METHOD_NAME(self, credDict):
    """Get all the defined metadata fields
    :param dict credDict: client credential dictionary
    :return: standard Dirac result object
    """
    result = super()._getFileMetadataFields(credDict)
    if not result["OK"]:
        return result
    metaDict = _stripSuffix(result["Value"], credDict)
    return S_OK(metaDict)