Writes the ``self.container`` entry of the specified specfile to the
        ``fic`` format.

        :param filelike: path to a file (str) or a file-like object
        :param specfile: name of an ms-run file present in ``self.info``
        :param compress: bool, True to use zip file compression

        .. note::
            In addition it could also dump the ``self.info`` entry to the
            zipfile with the filename ``info``, but this is not used at the
            moment. For details see :func:`maspy.auxiliary.writeJsonZipfile()`

def _writeContainer(self, filelike, specfile, compress):
        """Writes the ``self.container`` entry of the specified specfile to the
        ``fic`` format.

        :param filelike: path to a file (str) or a file-like object
        :param specfile: name of an ms-run file present in ``self.info``
        :param compress: bool, True to use zip file compression

        .. note::
            In addition it could also dump the ``self.info`` entry to the
            zipfile with the filename ``info``, but this is not used at the
            moment. For details see :func:`maspy.auxiliary.writeJsonZipfile()`
        """
        aux.writeJsonZipfile(filelike, self.container[specfile],
                             compress=compress
                             )