def search(self, tags=None):
        """Wrapper for the Workbench search method
            Args:
                tags: a single tag 'pcap' or a list of tags to search for ['bad','aptz13']
            Returns:
                A sample_set that contains the md5s for all matching samples
        """
        if isinstance(tags, str):
            tags = [tags]
        return self.workbench.generate_sample_set(tags)