Get a list of speaker URLs for this collection

        :type collection_name: String
        :param collection_name: the name of the collection to search

        :rtype: List
        :returns: a list of URLs for the speakers associated with
            the given collection

def get_speakers(self, collection_name):
        """Get a list of speaker URLs for this collection

        :type collection_name: String
        :param collection_name: the name of the collection to search

        :rtype: List
        :returns: a list of URLs for the speakers associated with
            the given collection

        """

        speakers_url = "/speakers/"+collection_name
        resp = self.api_request(speakers_url)
        if 'speakers' in resp:
            return resp['speakers']
        else:
            return []