def METHOD_NAME(body, file=None):
    ''' Get the metadata about a COMBINE/OMEX archive and its contents as a list of RDF triples
    Args:
        body (:obj:`dict`): dictionary in schema ``GetCombineArchiveMetadataFileOrUrl`` with keys
            * ``url`` whose value has schema ``Url``
              with the URL for a COMBINE/OMEX archive
            * ``omexMetadataFormat` whose value is a value of :obj:`OmexMetadataInputFormat`
        file (:obj:`werkzeug.datastructures.FileStorage`, optional): COMBINE/OMEX archive file
    Returns:
        :obj:`list` of ``RdfTriple``: metadata about a COMBINE/OMEX archive
            and its contents
    '''
    triples = handler(body, file=file,
                      omexMetadataSchema=OmexMetadataSchema.rdf_triples.value)
    triples_json = []
    for triple in triples:
        triples_json.append({
            '_type': 'RdfTriple',
            'subject': _convert_rdf_node_to_json(triple.subject),
            'predicate': _convert_rdf_node_to_json(triple.predicate),
            'object': _convert_rdf_node_to_json(triple.object),
        })
    return triples_json